Stochastic models of generating unitsValdma, Mati; Šuvalova, JelenaOil shale2005 / 2S, p. 143-151 : ill https://go.gale.com/ps/i.do?id=GALE%7CA199194842&sid=googleScholar&v=2.1&it=r&linkaccess=abs&issn=0208189X&p=AONE&sw=w&userGroupName=anon%7Edfe9f7a&aty=open-web-entry