The steric course of some electrophilic additions to the tetrahydropyridazine ring moiety of benzo[g]pyridazino[1,2-b]-phthalazine-6,13-dione derivatives. II

1. Cano, M.D.C.
2. Gómez-Contreras, F.
3. Sanz, A.M.
4. Yunta, M.J.R.