[1]
T. V. Chochikyan, M. A. Samvelyan, V. S. Haroutyunyan, and A. A. Avetisyan, “SYNTHESIS OF NEW SPIROHETERYL-SUBSTITUTED BUTANOLIDES ”, Proc. YSU B: Chem. Biol. Sci., vol. 44, no. 2 (222), pp. 28–32, May 2010.