V. Yu. Stolyarenko, A. A. Evdokimov, V. I. Shishkin, “Synthesis of spiro-annelated pyroglutamides by the Ugi reaction”, Mendeleev Commun., 23:4 (2013), 233–234
V. Yu. Stolyarenko, A. A. Evdokimov, V. I. Shishkin, “Synthesis of Tetrazole-substituted Spirocyclic γ-lactams by One-pot Azido-Ugi Reaction–cyclization”, Mendeleev Commun., 23:2 (2013), 108–109