wichita.edu
…Mineralogy and Chemistry, v. 11, Mineralogical Society of America, Washington, p. 97-144.3. Bischoff, W.D., Paterson, V., and Mackenzie, F.T. (1984). Geochemical mass balance for sulfur- and nitrogen-bearing acid components, Eastern United States. In O.P. Bricker, Ed., Geological Aspects of Acid Deposition, v. 7, Ann Arbor Science, Stonehame, MA, p.…
https://www.wichita.edu/profiles/academics/fairmount_college_of_liberal_arts_and_sciences/Geology/Bischoff-William.php