MAŇKOVSKÁ, Blanka - PERCY, Kevin E. - KARNOSKY, David Fitzerald. Impact of ambien trophospheric O3, CO2 and particulates on the epicuticular waxes of aspen clones differing in O3 tolerance. In Ekológia : časopis pre ekologické problémy biosféry. - Slovak Academic Press : Bratislava. ISSN 1335-342X, 1999, vol. 18, no. 2, s. 200-210.