Plass, Gilbert N. “The Carbon Dioxide Theory Of Climate Change”. Tellus 8 (1956): 140-154, . https://cvining.com/system/files/articles/vining/Plass-Tellus-1956.pdf.
Plass, Gilbert N. “Effect Of Carbon Dioxide Variations On Climate”. American Journal Of Physics 24 (1956): 376-387, . https://doi.org/10.1119/1.1934233.