Bauer, Helmut Department of Organic Chemistry, Max Planck Institute for Medical Research, Max Planck Society;
http://onlinelibrary.wiley.com/doi/10.1002/jlac.19707360102/epdf (Any fulltext)
https://doi.org/10.1002/jlac.19707360102 (Any fulltext)
Bauer, H. (1970). Alkylsubstituierte 3-Hydroxy-pyrrole und deren farbige Oxydationsprodukte. Liebigs Annalen der Chemie, 736(1), 1-15. doi:10.1002/jlac.19707360102.