Wieland, Theodor Max Planck Institute for Medical Research, Max Planck Society;
http://onlinelibrary.wiley.com/doi/10.1002/jlac.19697210127/epdf (Any fulltext)
https://doi.org/10.1002/jlac.19697210127 (Any fulltext)
Aquila, H., & Wieland, T. (1969). Synthese von N-Phthalyl-glutaminsäure-α-tert.-butylester. Liebigs Annalen der Chemie, 721(1), 223-224. doi:10.1002/jlac.19697210127.