## 4 Results
### Review Papers and Publication Years  
The number of review papers on the application of MCDA methods for environmental issues progressively growing every year, as illustrated in Figure 2. Specifically, no relevant review papers were discovered in the early years post-2000; however, since 2004, they have emerged in small yet steady amounts. Since 2015, there has been a surge in interest from authors to publish such review papers, with 11 and 13 review papers published in 2019 and 2021, respectively. It is worth mentioning the time intervals considered in review papers, specifically the years that authors have chosen in each review paper to investigate MCDA publications related to the environment. A cursory glance at Table 1 reveals that the earliest year for publications in the review papers is 1973, while the latest is 2023. The largest number of years analysed is 39, while the smallest number of years analysed is 2, present in a single review paper. The average time interval among the 80 reviewed papers amounts to 18.16 years. Additionally, it is worth noting that 15 of these reviews commence their analysis from the year 2000, evidently marking it as a pivotal point for the relevant studies--as is also the case in this study. Figure 2: Overview of review papers by year of publication. \begin{table}
\begin{tabular}{l c c c c c c c c c} \hline
**Clation** & **No. of Papers** & **Time intervals** & **Application Field** & **Fuzzy MCDA** & **Hybrid MCDA** & **Sensitivity Analysis** & **Dominant Methods** & **Dominant Conditions** \\ \hline
[9] & 14 & 2300-2319 & energy & medium & medium & - & AHF: IGPSS & - \\
[9] & 240 & 1990-2305 & waste management & limited & - & medium & AHF: IGPSS & - \\
[9] & 153 & 1985-3020 & waste management & limited & - & medium & AHF: IGPSS, Naturaturatur & - \\ \hline
[9] & 153 & 1985-3020 & waste management & limited & limited & medium & AHF & China, India, UK, Greece \\
[9] & 156 & 2008-2309 & waste management & limited & limited & - & AHF & Iran, Turkey, India \\
[9] & 87 & 2008-20313 & waste management & limited & limited & - & AHF & China \\
[9] & 74 & 1985-20311 & waste management & - & - & AHF/ANF, PROMETHE & - \\
[9] & 68 & 1991-20313 & waste management & limited & limited & - & AHF & - \\
[9] & 44 & 2007-2031 & waste management & medium & limited & - & AHF & India, Turkey, Greece \\
[9] & 36 & 1988-20313 & waste management & limited & limited & - & AHF & India, Turkey, Greece \\
[9] & 23 & 2008-2032 & waste management & - & wild/sky & limited & AHF, IGPSS & - \\
[9] & 20 & 2008-2031 & waste management & limited & limited & - & AHF & - \\
[10] & 12 & 1991-2031 & waste management & limited & limited & - & AHF & - \\
[10] & 20 & 2008-2039 & water management & medium & limited & medium & AHF: IGPSS, PROMETHE, ELECT & Iran, China \\
[10] & 149 & 2008-2020 & water management & - & limited & - & AHF & - \\
[10] & 113 & 1975-2006 & water management & medium & - & widely & Fuzzy,-compine, PEGENTHE, ELECTER, & USA \\
[10] & 199 & 2008-2039 & water management & limited & limited & medium & NSA (non-dominated organic organic), HECTER, & USA \\
[10] & 199 & 2008-2031 & water management & limited & - & - & AHF & India, China, Iran \\
[10] & 84 & 2008-2031 & water management & limited & medium & limited & AHF & - \\
[10] & 80 & 2008-2031 & water management & limited & medium & limited & AHF & - \\
[10] & 63 & 1998-2037 & water management & limited & limited & medium & Weighted Inner combination, AHP & India \\
[10] & 24 & 1993-2034 & water management & limited & - & - & ELECTER & - \\
[10] & 14 & 1995-2008 & water management & limited & limited & - & - & - \\
[11] & 60 & 1995-2008 & factory & weekly & - & - & AHF: MAV/TAUT & Finland \\
[11] & 57 & 1997-2005 & factory & limited & limited & limited & AHF & Finland \\
[11] & 56 & 1991-2030 & factory & - & - & - & Fous: OSA and DEA & USA \\
[13] & 37 & 2009-2309 & factory & limited & limited & limited & AHF & China,USA, Iran \\
[9] & 35 & 1996-3006 & factory & - & limited & - & AHF & - \\ \hline \end{tabular}
\end{table} 
Table 1: _Cont._