1. B. Modarai, M. H. Ghauderhari, H. Massoumi, A. Shafiee, J. Lalezari, and A. Badali, J. Heterocycl. Chem., 11, 343 (1974).
2. V. Bakulev and W. Dehaen, The Chemistry of 1,2,3-Thiadiazoles, J. Wiley & Sons, Hoboken (2004).
3. Yu. Yu. Morzherin, T. A. Pospelova, T. V. Glukhareva, V. S. Berseneva, Yu. A. Rozin, E. V. Tarasov, and V. A. Bakulev, Khim. Geterotsikl. Soedin., 1388 (2001). [Chem. Heterocycl. Comp., 37, 1270 (2001)].
4. E. V. Tarasov, Yu. Yu. Morzherin, and V. A. Bakulev, Khim. Geterotsikl. Soedin., 1698 (1995). [Chem. Heterocycl. Comp., 31, 1476 (1995)].
5. J. Goerdeler and G. Gnad, Chem. Ber., 99, 1618 (1966).