## Acknowledgement to Reviewers of _Applied Sciences_ in 2019
A. Mann, Steve Manno, Giorgio Manno, Michele Manno, Hiroki Manolakos, Dimitrios Manono, Bonface Ombasa Manos, George C. Manousos, Manousakas Manowska, Anna Manrique, Javier Mansfield, Marc L. Mansoori, Ali Mansour, Christopher Mansour, Gabriel Mansour, Osama E. Mansour, Rabih Mansouri, Amir Manss, Christoph Manus, Christoph Manus, Christoph Manus, Patricia Mante, Pierre-Adrien Mantell, Casimiro Mantymaki, Miia Mantzaris, Alexander V. Manueli, Federico Manzano-Agugliaro, Francisco Manzho, Sergei Manzo, Mario Manzoni, Stefano Manzo, Hanbin Mao, Ke Mao, Lei Mao, Yunwei Mapelli, Carlo Maple, Carsten Maqsoud, Abdelkabir Maranesi, Elvira Marani, Pietro Marasco, Daniela Manjunath, Manubolu Maraav, Tea Maraveas, Chrysanthos Manako, Patros E. Mano, G. Manous, G.  
* Martinez-Martin _et al._ (2020) Martinez-Martin, Ester Martinez-Turegano, Jaime Martinez-Valderrama, Jaime Martin-Garcia, Beatriz Martin-Gil, Jesus Martin-Gil, Jesus Martin-Gutierrez, Jorge Martinho, Fernando C. G. Martin, Alyerto Martini, Alberto Martinka, Jozef Martino, Luca Martino, Marco Martinotti, Simona Martin-Rodilla, Patricia Martin-Rodriguez, Alberto J. Martins Morgado, Teresa Leonor Martins, Alberto M. B. Martins, Marcos Martins, Natalia Martins, Rafael M. Martin-San Agustin, Rodrigo Martins-Loucao, Maria Amelia Martone, Alfonso Martucciello, Nadia Martyshko, Petr S. Maruthamuthu, Murali Marvasi, Massimiliano Marvasi, Massimiliano Marvasi, Massimiliano Marvasi, Milos Marvasi, Milos Marzantowicz, Lukasz Marzband, Mousa Marzec, Michal Marzec, Sarah Marzec, Claudia Marzic, Cristoforo Marzucca, Cristoforo Marzullo, Vincenzo Manuel Mas, David Masajada, Jan Masayuki, Anyoji Masayuki, Mukunoki Masort-Albea, Emilio J. Masek, Jiri Masek, Pavel Masiero, Andrea Masiri, Barbara Masiasi, Lesedi Masik, Peter Maskell, Pavel Massey, Mahesh Lal Masel, Eric Maslov, Mikhail Masmitija, Ivan Masoero, Marco Masoero, Nahid Al Masumi, Majid Masari, Luca Massella, Manuela Martino, Marco Massella, Daniele Masselli, Claudia Martin-Rodriguez, Alberto J. Massidda, Luca Marting, Lorenza Martino, Marcos Mastalis-Poplawska, Joanna Mastorakos, Ioannis Martino, Ravel Mas Masti, Lucia Martino, Mario Mari, Marcos Mast  
* Matiu (2020) Matiu, Michael Mativenga, Mallory Matko, Vojko Matone, Marco Matos, Ines Matos, Joao Nuno Matos, Sergio Matos, Sergio Matoulkova, Dagmar Matras, Andrzej Matsa,  
McDermott, Christopher McFall, Kevin McGiffen, Milton McGorty, Ryan McGort, Kevin B. McGuitar, Patrick McGeix, Hamid McHeick, Hamid McHenry, Melinda McIntyre, Dustin L. McKee, Kristoffer McKendry, Jonathan James Donald McKinnon, Dugal McLaughlan, James McPhail, Michael J McPherron, Benjamin D. McPherson, Bradley McQuade, Kevin J. Meade, Douglas B Meana Paneda, Ruben Meana-Fernandez, Andres Mekki, O. Ben MEDA, Naamwin-So-Bawfu Romaric Medalia, Ohad Meddaugh, W. Scott Medeighini, Laura Medina Gallego, Juan Medina Quesada, Angeles Medina, Alejandro Medina, Ruben Medina-Gonzalez, Yaocihuatl Medina-Vera, Myriam Medronho, Bruno Filipe Figueiras Medunic, Gordana Medved, Sergej Medvedev, Sergey Medvinsky, Michael Medvinsky, Paul Medynska-Juraszek, Agnieszka Meekins, Dave Moenashisundaram, Ganesh Kumar Meerhoff, L.A. Megaloikonomos, Panayiotis D. Meggias Jimenez, David Megret, Patrice Megret, Remi Mehdi, Rahmani-andebili Mehdipour, Iman Mehmod, Faizan Mehmood, Khawaja Khalid Mehrabi, Abbas Mehrandezh, M. Mehrotra, Prakhar Mehr-Ow, Mehrpouya, Mehrshad Mehta, Sunali Mei, Hanfei Meier, Robert J. Meilhan, Jerome Meille, Valerie Meinke, Peter Meisen, Tobias Meissner, Miroslaw Mea-Fernandez, Andreas Mekki, O. Ben Mekuchi, Miyuki Melado, Angela Melcder, Jozef Melchor, Juan Melchor, Tyler K. Melgarejo, Miguel Melgarejo, Miguel Meliani, Zakaria  
* Meneses _et al._ (2020) Meneses, Eloy Lopez Meneses, Filipe Meneses, Filipe Meng, Lijian Meng, Qingshi Meng, Wei Meng, Weia Meng, Weina Meng, Weizhi Meng, Weizhi Meng, Xiangchao Meng, Yuan Meng, Zhaozong Meng, Zibo Meng, Zibo Mengarelli, Alessandro Menini, Maria Menoufi, Karim Menoufi, Karim Men, Mousir Mensi, Mounir Mentel, Grzegorz Menzel, Miriam Meola, Carosena Meoni, Gabriele Mercader, Pedro Merchan, Pilar Merciol, Francois Mercolli, Paolo Merdan, Munir Merie, Violeta Valentina Merino, Jose Joaquin Merleti, Roberto Merlo, Vittorio Merlo, Vittorio Mernik, Marjan Merola, Simona Silvia Meroni, Giovanni Merrill, Frank Merryman Boncori, John Peter Mertas, Anna Meruia-Pastor, Oscar Mesa, Francisco Mesa, Francisco Mesarovic, Sinisa Mesa-Carrascosa, Francisco Javier Mesa-Carrascosa, Francisco Javier Mesbahi, Tedjani Mesnil, Olivier Mesa, Anabela Mesquita, Conceicao Messa, Gianandrea Vittorio Messenio, Dario Messina, Dario Messina, Marco Mesina, Marco Mesriner, Daniele Metcalf, Steven Metelli, Giovanni Methemitis, Spyridon Metzkes-Ng, Josefine Meyer-Kohlstock, Daniel Meyer-Kohlstock, Daniel Meyn, Thomas Mezei, Pavel Meziani, Yahya Mia, Mozambique M. Mahaml, M Shamim Miao, Tianxin Miao, Tianxin Miscadei, Enrico Miccio, Francesco Michael Ho, Siu Chun Michaelides, Michalis P. Michailidis, Panagiotis Michailik, Jan Michalik, Jan Michalik, Phanowicz, Drew R. Michaud, Philippe Michel, Carlos R. Michel, Magdalena Michel, Maximilian Michelini, Elena Michelini, Elena Micheli, Julien Michiata, Masaki Michitsuji, Yohei Michnik, Robert A. Michnik, Roberto A. Micha, A.  
Mikheev, Gennady M. Mikki, Norihisa Mikki, Norihisa Mikkelsen, Ove Miklaszewski, Andrzej Miklosevic, Kresimir Miko, Balazs Miko, Balazs Mikolajczyk, Tadeusz Mikkopoulos, Pantelis N. Mikroposulos, Pantelis N. Mikroyannidis, Alexander Mikrut, Slawomir Mikulchyk, Tatsiana Mikulik, Jerzy Mikulski, Dawid Milani, Alfredo Milcovich, Gesmi Milczek, Wojciech Milczek, Rich Milczek, AndrMishra, Kuber  
Mishra, Pawan Kumar  
Mishra, Rajesh  
Mishra, Rupesh K.  
Mishra, Sambeet  
Mishra, Yateendra  
Miskowicz, Marek  
Missimer, Thomas  
Mistretta, Fausto  
Mistrick, Richard G.  
Mistry, Kamlesh  
Misture, Scott T.  
Mitchell, Jason  
Miteva, Mariya  
Mitev-Czajewska, Monika  
Mitra, Mainak  
Mitroo, Dhruv  
Mitryukovskiy, Sergey  
Mitschke, Christian  
Mitsukura, Yasue  
Mittal, Anuj  
Mittal, Nitesh  
Mittal, Sudip  
Miterer, Tobias  
Miyaji, Hirofumi  
Miyamori, Yasunori  
Miyazaki, Takahiko  
Miyazaki, Toshiki  
Miyoshi, Norio  
Miyoshi, Shin-ichi  
Mizener, Andrew  
Mizzi, Arthur  
Mizzi, Luke  
Mkandawire, Martin  
Mkaouer, Mohamed Wiem  
Mlejnek, Pavel  
Mlynarczuk, Mariusz  
Mynarczykowska, Anna  
Mynski, Dariusz  
Mo, John  
Mo, Lei  
Moazeni, Sajjad  
Mobili, Alessandra  
Mobilio, Nicola  
Mocanu, Irina Georgiana  
Moccia, Massimo  
Moccia, Sara  
Mocozet, Laurent  
Moczko, Przemyslaw  
Modarresi, Mohammad Sadegh  
Modi, Nisarg  
Modica, Maria  
Modigell, Michael  
Modoni, Gianfranco  
Moga, Ligia  
Moghaddam, Hesam S.  
Moghaddam, Mohammad Jafar Hadidian  
Moghaddam, Saeed  
Moghaddami, Masood  
Moh, Melody  
Mohagheghian, Iman  
Mohamed, Manar  
Mohamed, Salah A.  
Mohammad, Khader  
Mohammad, Mahdavi  
Mohammadi, Fazel  
Mohammadiarni, Hossein  
Mohammed, Alyaa  
Mohammed, Wael  
Mohamel, Chilukuri K.  
Mohantpurkar, Manish  
Mohanta, Antaryami  
Mohany, Atef  
Mohasseb, Alaa  
Mohebbbi, Amin  
Mohotti, Damith  
Mohr, Andrea  
Mohseni, Parsian K.  
Mohsenzadeh, Amin  
Moiz, Ahmed Abdul  
Mojososka, Biljana  
Mojtahedi, Mohammad  
Mokarian, Parvaneh  
Mokhlespour Esfahani, Mohammad Iman  
Mokhtari, Mehdi  
Molaei, Somayeh* Molavi (2020) Molavi, Behnam Moldovan, Mirela Moldovanu, Dan Moldovanu, Dan Moldoveanu, Florica Mole, Nikolaj Moleti, Arturo Molin, William Molina Alcaide, Desire Molina, Jose Pascual Molinari, Andrea Molina-Solana, Miguel Molina-Viedma, Angel Jesus Moll, Henri C. Molla, Md.