Merhatuly, N., L. Balmagambetova, S. Abeuova, A. Omarova, L. Toktarova, and S. Adekenov. “Stereocontrolled Eliminacion-Cyclization of (+)-Hanphylline”. Chemical Bulletin of Kazakh National University, Vol. 65, no. 1, Dec. 2012, pp. 302-5, doi:https://doi.org/10.15328/chemb_2012_1302-305.