Analytic ambient occlusion using exact from-polygon visibility. - Oana Apostu; Frédéric Mora; Djamchid Ghazanfarpour; Lilian Aveneau (Comput. Graph., 2012)

Lazy Visibility Evaluation for Exact Soft Shadows. - Frédéric Mora; Lilian Aveneau; Oana Apostu; Djamchid Ghazanfarpour (Comput. Graph. Forum, 2012)