Brossmer, Reinhard Max Planck Institute for Medical Research, Max Planck Society;
Ziegler, D. Max Planck Institute for Medical Research, Max Planck Society;
http://www.sciencedirect.com/science/article/pii/S0040403901892662/pdf?md5=7618f5b24cd1fc8780ec8b3e812fb8cd&pid=1-s2.0-S0040403901892662-main.pdf (Any fulltext)
https://doi.org/10.1016/S0040-4039(01)89266-2 (Any fulltext)
Brossmer, R., & Ziegler, D. (1966). Zur Darstellung heterocyclischer Aldehyde. Tetrahedron Letters, 7(43), 5253-5256. doi:10.1016/S0040-4039(01)89266-2.