???????, ?., & ???????????, ?. (?????.).  (2004).  ?? ???????? ??? ??????? ???? ??????. ??? ??????? ????????? ?????? ??????? ????????? & ????????? ?????????? ????????? - ?????????????? & ????????? ??????. ????????????? ??? 18-21 ?????????, ????????: ???????????? ??????? ????? ?????????????.

???????????, ?., & ??????, ?. (?????.).  (2004).  ? ???????????? ??? ????? ?????????. ??? ??????? ????????? ?????? ??????? ????????? & ????????? ?????????? ?????????. ????????????? ??? 18-21 ?????????, ????????: ???????????? ??????? ????? ?????????????.

???????????, ?., & ??????, ?. (?????.).  (2004).  ?? ?????????????? ??? ?????? ????????? ???? ????? ???? ????????????. ??? ?????????????? & ????????? ??????. ????????????? ??? 18-21 ?????????, ????????: ???????????? ??????? ????? ?????????????.

Panayotopoulos, M., Beck, U., & Donth, S. (?????.).  (2006).  Long-Term Monitoring of a Heron Colony in Porto Lagos, Thraki, Greece. ??? 10th International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions. ????????????? ??? 26-30 June, Patras: Hellenic Zoological Society, Hellenic Ornithological Society, Hellenic Ministry of Rural Development, Section of Animal Biology (Dept. Of Biology, Univ. of Patras).