Kaks aastat vahtralehte liiastKimmel, ReigoEesti Päevaleht2000 / 1. juuni, lk. 6 The EU directive on OSAS and driving license : the Estonian approachSõõru, Erve17th Nordic Sleep Conference jointly organized with the Congress of the Estonian Sleep Medicine Association : 24-26 May, 2017 Tallinn, Estonia2017 / p. 26 http://www.ester.ee/record=b4685367*est