Vitamin A and All-trans and 9-cis retinoic acids inhibit cell proliferation during the progression phase of hepatocarcinogenesis in wistar rats - Silveira, Elaine Regina; Naves, Maria Margareth Veloso; Vannucchi, Hélio; Jordão Júnior, Alceu Afonso; Dagli, Maria Lúcia Zaidan; Moreno, Fernando Salvador (Nutrition and Cancer, 2001)