Pol M Polymethine dyes: structure and properties/ Nikolai Tyutyulkov, Jorgen Fabian, Achim Melhorn, Fritz Dietz, Alia Tadger. -- Sofia:St. Xliment Ohridski University Press, 1991. 249 p. : grafs., 13 cm. Notas bibliograficas al pie de las paginas References: p. 210-249. 1.TIKTES Y TINTURA 2. QUIMICA TEXTIL