Szöcs, Eduard, Tamás Stirling, Eric R. Scott, Andreas Scharmüller, and Ralf B. Schäfer. “Webchem: An R Package to Retrieve Chemical Information from the Web”. Journal of Statistical Software 93, no. 13 (May 29, 2020): 1–17. Accessed November 27, 2022. https://www.jstatsoft.org/index.php/jss/article/view/v093i13.