Otting, Walter Max Planck Institute for Medical Research, Max Planck Society;
http://onlinelibrary.wiley.com/doi/10.1002/cite.330240604/epdf (Any fulltext)
https://dx.doi.org/10.1002/cite.330240604 (Any fulltext)
Otting, W. (1952). Ofen zum Regenerieren von Kupferoxyd. Chemie-Ingenieur-Technik, 24(6), 498-498. doi:10.1002/cite.330240604.