"Leonardo da Vinci" National Agency
http://www.leonardo.hrdc.bg/default-en.htm
"Leonardo da Vinci" Programme
http://www.ec.europa.eu/education/programmes/leonardo/leonardo_en.html
"European Commission"
http://www.ec.europa.eu
Municipality of Sliven
http://www.sliven.bg
"Zgura - M" Ltd.
http://www.zgura-m.eu
University of Lodz
http://www.uni.lodz.pl/ang/portal
University of Ljubljana
http://www.pef.uni-lj.si
University of Edinburgh
http://www.eus.org.uk