Stahl, Ann Brower (April 1984): «Hominid Dietary Selection Before Fire» i: Current Anthropology (University of Chicago Press) 25 (2): 151–168. doi:10.1086/203106.
Luke, Kim: «Evidence That Human Ancestors Used Fire One Million Years Ago», ScienceDaily 2. april 2012. Sitat: «An international team led by the University of Toronto and Hebrew University has identified the earliest known evidence of the use of fire by human ancestors. Microscopic traces of wood ash, alongside animal bones and stone tools, were found in a layer dated to one million years ago.»
Jens Gabriel Hauge (NMBU) (22.02.2025). «proteasehemmere». Store Norsk Leksikon. Besøkt 30.06.2025. «Proteasehemmere i planter spiller en rolle i deres forsvar mot andre organismer. Proteasehemmere mot trypsin og kymotrypsin i soyabønner gjør at soyaprotein ikke kan spises i rå tilstand, men må varmebehandles.»
Andrew C. Scott (1. juni 2018). «Times Magazine, When Did Humans Discover Fire? The Answer Depends on What You Mean By ‘Discover’». Besøkt 30.06.2025. «The first stage of human interaction with fire, perhaps as early as 1.5 million years ago in Africa, is likely to have been opportunistic. Fire may have simply been conserved by adding fuel, such as dung that is slow burning. A fire would have been useful not only for light and warmth at night, but to frighten off predatory animals, and the smoke would have been effective in keeping insects away. This ability to 'stretch' fire was a novel feat, only developed by humans.»
