Shortly after independence, filmmakers such as Jean-Paul Ngassa and Thérèse Sita-Bella explored similar themes. In the 1960s, Mongo Beti, Ferdinand Léopold Oyono and other writers explored postcolonialism, problems of African development, and the recovery of African identity. In the mid-1970s, filmmakers such as Jean-Pierre Dikongué Pipa and Daniel Kamwa dealt with the conflicts between traditional and postcolonial society. Literature and films during the next two decades focused more on wholly Cameroonian themes.