GAMMA initially included the architects George Candillis, Alexis Josic and Shadrach Woods.
[1][2] In the early 1950s, Écochard commissioned GAMMA to design housing that provided a "culturally specific living tissue"[3] for laborers and migrants from the countryside.
[4] Sémiramis, Nid d’Abeille (Honeycomb), and Carrières Centrales were some of the first examples of this style that came to be called vernacular modernism.
[4] Ecochard's 8x8 meter model, designed to address Casablanca's issues with overpopulation and rural exodus, was pioneering in the architecture of collective housing.
[12] Other architects associated with GAMMA include Jean-François Zevaco, Abdeslam Faraoui, Patrice de Mazières, and Mourad Ben Embarek.