Doulka, E., & Kehayias, G. (?????.).  (2006).  DIEL VERTICAL MIGRATION OF ZOOPLANKTON IN LAKE TRICHONIS. ??? ???????? ???????? ?????????? ????????? - 28° ???????????? ????????. ????????????? ??? 18? ? 20? ?????, ????????: ???????? ???????? ?????????? ?????????.

Doulka, E., & Kehayias, G. (?????.).  (2006).  Spatial and Temporal Distribution of Zooplankton in Lake Trichonis. ??? 10th International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions. ????????????? ??? 26-30 June, Patra: Hellenic Zoological Society, Hellenic Ornithological Society, Hellenic Ministry of Rural Development, Section of Animal Biology (Dept. Of Biology, Univ. of Patras).

????????, ?., & ?????, ?. (?????.).  (2003).  ????????? ??? ?????????? ???????? ??? ??????????? ????? ????????? - ????????????? ????????. ??? 7° ?????????? ???????? ????????????? & ???????. ????????????? ??? 6-9 ?????, ??????????, ?????: ?????? ?????? ????????? ???????.