[1]
A. M. M. El-Saghier, M. A. Makhlouf, N. F. H. Mahmoud, and W. A. El-Adawish, “A-Alkenoyl Ketene S,S- and N,S-Acetals As Starting For Unexpected and Novel Synthesis of N-Heterocycles”, JAC, vol. 6, no. 1, pp. 861–872, Apr. 2010.