1. Amino derivatives of 1,8-naphthalic anhydride and derived dyes for synthetic-polymer fibres
2. MCI, German Patent 2258545 (1971).
3. a MCI, Japanese Patents 7490327 (1972) (Chem. Abstr., 83, 12179)
4. b MCI, Japanese Patents 7457169 (1972) (Chem. Abstr., 81, 171337)
5. c MCI, Japanese Patents 7534327 (1972) (Chem. Abstr., 83, 99177)