M. Todorova, R. Bakalska, S. Atanasova, R. Seidel, T. Kolev, and E. Cherneva, “Synthesis and Structural Study of Styryl Quinolinium Dye”, C. R. Acad. Bulg. Sci., vol. 78, no. 8, pp. 1140–1149, Aug. 2025.