Effect of innovation in unconventional oil industry : case of Estonia and CanadaKallemets, Kalev; Tänav, TõnisOil shale2017 / p. 279-294 : ill https://doi.org/10.3176/oil.2017.3.06 http://www.ester.ee/record=b1072685*est https://artiklid.elnet.ee/record=b2824320*est Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS