1. NMR and mass spectrometric characterization of vinblastine, vincristine and some new related impurities—Part I;Dubrovay;J. Pharm. Biomed. Anal.,2012
2. C.T. Beer, J.H. Cutts, R.L. Noble, Vincaleukoblastine, US Patent 3,097,137 (1963).
3. G.H. Svoboda, Method of preparing leurosine and vincaleukoblastine, US Patent 3,225,030 (1965).
4. G.H. Svoboda, A.J. Barnes Jr., R.J. Armstrong, Leurosidine and leurocristine and their production, US Patent 3,205,220 (1965).
5. K. Jovánovics, K. Szász, Cs. Lőrincz, L. Hörömpő, J. Farkas, Process for the isolation of vinblastine and leurosine, HU Patent 154,715 (1967).