Kuhn, Richard Max Planck Institute for Medical Research, Max Planck Society;
Deutsch, Adam Max Planck Institute for Medical Research, Max Planck Society;
https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cber.19330660620 (Any fulltext)
https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cber.19330660620 (Any fulltext)
Kuhn, R., & Deutsch, A. (1933). Die Konstitution des Azafrins. Berichte der Deutschen Chemischen Gesellschaft, 66(6), 883-892. doi:10.1002/cber.19330660620.