Almalech, Mony. Bulgarian norm of word associations for color terms. – In: PSYCHOLINGUISTICS ON THE THRESHOLD OF THE YEAR 2000. Proceedings of the 5.th International Congress of the International Society of Applied Psycholinguistics.

Editors: Maria da Graca Pinto, Joao Veloso, Belinda Maia. Faculdade de Letras da Universidade do Porto, Porto, 1999. pp.103-105.

http://ler.letras.up.pt/site_uk/default.aspx?qry=id03id129&sum=sim http://ler.letras.up.pt/uploads/ficheiros/8407.pdf