Kempa, Arnold and Jan Dobrowolski. "Palladium phthalocyanine and its polymorphic forms." Canadian Journal of Chemistry 66/10 (1988): 2553-2555.

Kempa, Arnold and Jan Dobrowolski. "Palladium phthalocyanine and its polymorphic forms." Canadian Journal of Chemistry 66/10 (1988): 2553-2555.