Jerchel, Dietrich Max Planck Institute for Medical Research, Max Planck Society;
http://onlinelibrary.wiley.com/doi/10.1002/jlac.19545900305/epdf (Any fulltext)
https://dx.doi.org/10.1002/jlac.19545900305 (Any fulltext)
Jerchel, D., Kracht, M., & Krucher, K. (1954). Untersuchungen über Benzimidazole. Liebigs Annalen der Chemie, 590(3), 232-241. doi:10.1002/jlac.19545900305.