## 3 Results and Discussion
### Most Globally Cited Documents and Locally Cited References  
The global citation of a document depicts it's the number of citation occurrences on the Web of Science database for the period the data were downloaded. It does rely on the weight of the citing articles (how impactful) rather than their popularity. A paper cited by an impactful paper attracts audience that is more impactful, whereas the number of citations an article receives reflects its popularity, not minding the quality or worth of the citing paper(s). However, the local cited reference (LCR) refers to the number of citations contained in the list of references of a published paper for other articles within the collection. It does explain the number of times the papers included in that collection were cited by other papers in the same collection. This is driven more by popularity than impact [56,57]. \begin{table}
\begin{tabular}{c c c c c c c c c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Source**} & \multirow{2}{*}{**IF**} & \multirow{2}{*}{**h\_Index**} & \multirow{2}{*}{**g\_Index**} & \multirow{2}{*}{**m\_Index**} & \multirow{2}{*}{**TC**} & \multirow{2}{*}{**NP**} & \multirow{2}{*}{**PY\_Start**} & \multicolumn{8}{c}{**NP per Year**} \\ \cline{6-19}  & & & & & & & & & & & & & **2011** & **2012** & **2013** & **2014** & **2015** & **2016** & **2017** & **2018** & **2019** & **2020** \\ \hline Neurotology & 4.294 & 15 & 26 & 1.36 & 722 & 29 & 2011 & 3 & 8 & 4 & 4 & 2 & 3 & 1 & 3 & 0 & 1 \\ Toxicological Sciences & 4.849 & 9 & 16 & 0.82 & 265 & 18 & 2011 & 1 & 1 & 0 & 1 & 2 & 0 & 2 & 2 & 7 & 2 \\ Neurotology and Teratology & 3.763 & 11 & 17 & 1 & 428 & 17 & 2011 & 3 & 3 & 2 & 1 & 5 & 1 & 1 & 1 & 0 & 0 \\ Toxicology & 7.563 & 9 & 12 & 1 & 2 & 183 & 12 & 2013 & 0 & 0 & 2 & 0 & 4 & 2 & 3 & 0 & 1 & 0 \\ Archives of Toxicology & 5.153 & 8 & 11 & 0.8 & 430 & 11 & 2012 & 0 & 1 & 2 & 1 & 1 & 0 & 2 & 1 & 1 & 2 \\ Environmental Health Perspectives & 9.031 & 5 & 8 & 0.46 & 636 & 8 & 2011 & 1 & 0 & 3 & 1 & 1 & 1 & 0 & 0 & 0 & 1 \\ Toxicology and Applied Pharmacology & 4.219 & 7 & 8 & 0.64 & 377 & 8 & 2011 & 2 & 0 & 1 & 1 & 0 & 0 & 0 & 3 & 0 & 1 \\ Eototoscopology and Environmental Safety & 6.291 & 5 & 5 & 1 & 42 & 5 & 2017 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 4 & 0 \\ Environmental Health & 5.984 & 4 & 5 & 0.67 & 69 & 5 & 2016 & 0 & 0 & 0 & 0 & 0 & 1 & 1 & 1 & 2 & 0 \\ Environmental Research & 6.498 & 4 & 5 & 0.44 & 140 & 5 & 2013 & 0 & 0 & 1 & 0 & 1 & 1 & 1 & 0 & 1 & 1 \\ Toxicologic Pathology & 1.902 & 3 & 5 & 0.27 & 42 & 5 & 2011 & 2 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 3 & 0 \\ Toxicology in Vitro & 3.500 & 4 & 5 & 0.44 & 87 & 5 & 2013 & 0 & 0 & 1 & 0 & 1 & 1 & 1 & 0 & 0 & 1 \\ Brain Research Bulletin & 4.077 & 4 & 4 & 0.36 & 49 & 4 & 2011 & 1 & 0 & 0 & 1 & 1 & 1 & 0 & 0 & 0 \\ Chemical Research in Toxicology & 3.739 & 3 & 4 & 0.38 & 37 & 4 & 2014 & 0 & 0 & 1 & 1 & 0 & 0 & 1 & 1 & 0 & 0 \\ Environment International & 9.621 & 4 & 4 & 0.36 & 134 & 4 & 2011 & 1 & 1 & 0 & 0 & 0 & 1 & 0 & 0 & 0 \\ Environmental Pollution & 8.071 & 2 & 4 & 0.5 & 22 & 4 & 2018 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 2 & 0 & 2 \\ Neurotoxicity Research & 3.911 & 3 & 4 & 0.27 & 71 & 4 & 2011 & 1 & 1 & 0 & 0 & 0 & 0 & 0 & 1 & 0 & 1 \\ Place One & 3.240 & 4 & 4 & 0.5 & 129 & 4 & 2014 & 0 & 0 & 0 & 4 & 0 & 0 & 0 & 0 & 0 & 0 \\ Science of the Total Environment & 7.963 & 3 & 4 & 0.3 & 43 & 4 & 2012 & 0 & 1 & 0 & 0 & 0 & 0 & 1 & 0 & 0 & 2 \\ Toxicology Letters & 4.372 & 3 & 4 & 0.33 & 183 & 4 & 2013 & 0 & 0 & 1 & 1 & 0 & 1 & 0 & 0 & 1 & 0 \\ \hline
**Total** & & & & & & & & & & & & & & & & & & & & & & & & & & & \\ \hline \hline \end{tabular}  
* NP- number of publications; PY_Start_ Publication year (start); TC_Total_ citations; IP: Impact factors.  
\end{table} 
Table 4: Most relevant and impactful sources of journal articles from 2011 to 2020. The top 20 globally cited documents and top 20 locally references assessed based on their total citations (TCs) and total citations per year (TC/Year) in neurotoxic studies from 2011-2020 are displayed in Tables 5 and 6.