GPU friendly, anti-aliased, soft shadow mapping. - Michal Valient; Tomas Bujnak (SCCG, 2005)

Efficient real-time shadows. - Elmar Eisemann; Ulf Assarsson; Michael Schwarz 003; Michal Valient; Michael Wimmer 001 (SIGGRAPH Courses, 2012)

Advances in real-time rendering in games, part II. - Natasha Tatarchuk; Michal Valient; Wade Brainerd; Bartlomiej Wronski; Peter Sikachev; Jean-Normand Bucci (SIGGRAPH Courses, 2014)