• Liquefaction of Estonian kukersite oil shale kerogen with selected superheated solvents in static conditionsLuik, Hans; Palu, Vilja; Bitjukov, Mihhail; Luik, Lea; Kruusement, Kristjan; Tamvelius, Hindrek; Pryadka, N.Oil shale2005 / 1, p. 25-36 : ill https://artiklid.elnet.ee/record=b2342140*est