National Agency "Leonardo da Vinci"
http://leonardo.hrdc.bg/default-en.htm
"Leonardo da Vinci" programme
http://europe.eu.int/comm/education/leonardo.html
European Commission
http://europe.eu.int/comm/index_en.htm
PAU EDUCATION
http://www.elearningeuropa.info
Sofia university, Bulgaria
http://www.uni-sofia.bg
Siksali Development Centre, Estonia
http://www.siksali.ee
"Zgura - M" Ltd., Bulgaria
http://www.zgura-m.eu