R. Folzenlogen

Colorless Crystalline Perchloric and Hexafluorophosphoric Acid Salts of Sterols. The Color Formation between Sterols and Perchloric Acid

W. Lange, D. G. Kolp, R. Folzenlogen, 1949 .

A welcome revival

R. Folzenlogen, 2012 .

Children and Transportation: Identifying Environments that Foster Walking and Biking to School

Jun-Hyun Kim, Byoung-Suk Kweon, B. Kweon, 2006 .