Härter, H.P., U. Stauss, J.H. Osiecki, and O. Schindler. “Schmidt-Reaktion an Tetrahydro-Chinolon-Derivaten”. CHIMIA 30, no. 2 (February 29, 1976): 50. Accessed April 4, 2025. https://www.chimia.ch/chimia/article/view/1976_50.