You may also wish to search for items by Bernhardt.
Only one matching reference was found.
Zeng, X.; Bernhardt, E.; Beckers, H.; Willner, H., Synthesis and Characterization of the Phosphorus Triazides OP(N, Inorg. Chem., 2011, 50, 21, 11235, https://doi.org/10.1021/ic201802x . [all data]