LAAKSO, Katja - PAOLETTI, Elena - HUTTUNEN, Satu. Leaf morphology and gas exchange in holm oak (Quercus ilex L.) trees in different environments. In Ekológia : časopis pre ekologické problémy biosféry. - Bratislava : Academic electronic press, 2006. ISSN 1335-342X, 2006, vol. 25, no. 3, s. 223-233.