World Data Center for Microorganisms: http://www.wdcm.org/
European Culture Collections' Organization: http://www.eccosite.org/
Convention on Biological Diversity: http://www.cbd.int/
International Regulations for Packaging and Shipping of Microorganisms: https://www.dsmz.de/fileadmin/user_upload/Deposit/EBRCN_information_transport__August_2013.pdf
OECD Best Practice Guidelines on Biosecurity for BRCS: http://www.oecd.org/dataoecd/6/27/38778261.pdf
The Mycetotheca of the Athens University: http://mycetotheca.biol.uoa.gr/
International Phycological Society: http://www.intphycsoc.org/
Phycological Society of America: http://www.psaalgae.org/
International Society for Diatom Research: http://www.isdr.org/
Federation of European Phycological Societies: http://www.feps-algae.org/
The Japanese Society of Diatomology: http://diatomology.org/eng/
International Association for Cyanobacteria Research (IAC): http://www.worldcat.org/identities/lccn-nr97042354/
The on-line database of cyanobacterial genera: http://www.cyanodb.cz/
Association for the Sciences of Limnology and Oceanography: http://aslo.org/index.php
Algaebase : Listing the World's Algae: http://www.algaebase.org/
International Society for Applied Phycology: http://www.appliedphycologysoc.org/
Society for Industrial Microbiology and Biotechnology: http://www.simbhq.org/
International Society for Environmental Biotechnology: https://uia.org/s/or/en/1100049772
Hellenic Phycological Society: http://www.phycology.gr/
Hellenic Botanical Society: http://www.hbs.gr/el/
Hellenic Initiative Mikrobiokosmos: http://mikrobiokosmos.org/
Greek Society of Biological Sciences: http://www.eebe.gr/
Hellenic Ecological Society: http://www.helecos.gr/el
Hellenic Society for the Protection of Nature: http://www.eepf.gr/el