http://newvisionsmagazine.com/May2002/uarnold05-02.html

http://www.zb.eco.pl/gb/4/council.htm

http://www.montelis.com/satya/backissues/nov97/council.html

http://www.earthlight.org/2002/essay46_macy.html

http://www.osearth.com/teachers/council.shtml

http://drjackie.freeservers.com/faruniv.html

http://drjackie.freeservers.com/faruniv.html

http://www.greenworld.org.ru/eng/gwnews/bn/news030.htm