Kurteva, Vanya B.; Antonov, Liudmil M.; Nedeltcheva, Daniela V.; Crochet, Aurelien; Fromm, Katharina M.; Nikolova, Rositsa P.; Shivachev, Boris L.; Nikiforova, Maya S. Dyes and Pigments, 2012 , vol. 92, # 3 p. 1266 - 1277