found: Kupka Nepraš, 2004?:p. 3 (... Karlem Neprašem; sculptor; b. 1932, Prague; d. 2002, Prague; specialised in architectural sculpture; longtime collaborator with architect Pavel Kupka)
found: Tendence v českém sochařství 1979-1989, 1989:p. 28 (Karel Nepraš; b. April 2, 1932, in Prague)
found: Šmidrové, [2015] :page 105 (founded Prague-based Šmidrové group with Rudolf Komorous, Bedřich Dlouhý, and Jan Koblasa)
found: Czech Wikipedia, viewed August 3, 2016 :(Karel Nepraš; sculptor and artist working in drawing and printmaking, professor at Akademie výtvarných umění v Praze; born in Prague ; died in Prague April 5, 2002) - https://cs.wikipedia.org/wiki/Karel_Nepra%C5%A1
