M. K. Patil, M. G. Kotresh, T. S. Tilakraj, and S. R. Inamdar, “Solvatochromism and ZINDO-IEFPCM solvation study on NHS ester activated AF514 and AF532 dyes: Evaluation of the dipole moments”, Eur. J. Chem., vol. 13, no. 1, pp. 8–19, Mar. 2022.