1. G. Heinisch and H.Frank , Pharmacologically Active Pyridazines. Part 1 , in Progress in Medicinal Chemistry , ed. G. P. Ellis and G. B. West , Elsevier , Amsterdam , 1990 , vol. 27 , pp. 1–49
2. G. Heinisch and H.Kopelenk-Frank , Pharmacologically Active Pyridazines. Part 2 , in Progress in Medicinal Chemistry , ed. G. P. Ellis and D. K. Luscombe , Elsevier , Amsterdam , 1992 , vol. 29 , pp. 141–183