Jakob Björnsson 1926-2020; Guðmundur Pálmason 1928-2004; Karl Ragnars 1941; Valgarður Stefánsson 1939-2006; Orkustofnun. Jarðhitadeild.(Orkustofnun, 1978)
Guðmundur Pálmason 1928-2004; Kristján Sæmundsson 1936; Karl Ragnars 1941; Axel Björnsson 1942; Ingvar Birgir Friðleifsson 1946; Orkustofnun. Jarðhitadeild(Orkustofnun, 1976)
Karl Ragnars 1941; Stefán Arnórsson 1942; Jón Steinar Guðmundsson 1947-2018; Karl Ómar Jónsson 1927-2014; Hitaveita Reykjahlíðar; Orkustofnun. Jarðhitadeild.(Orkustofnun, 1972)