Isolation, identification and activity of natural antioxidants from sweet grass (Hierochloe odorata), costmary (Chrysanthemum balsamita) and horehound (Marrubium vulgare), cultivated in Lithuania / Audrius Pukalskas . Wageningen :  Wageningen University , 2008 . 137 s . Doktorandská dizertačná práca (PhD.). - Wageningen University . ISBN 978-90-8504-982-1 . [1, of that borrowed 0]