1. Orientation in the 10-Thiaxanthenone1 Nucleus
2. J. O. Jilek, J. Pomykacek and M. Protiva, Czech. Patent 113,699 (1965),
3. Czech. Patent 113,923 (1965);
4. J. O. Jilek, M. Rajsner, J. Pomykacek and M. Protiva, Czech. Patent 113,698 (1965);
5. Czech. Farm., 14, 294 (1965);