G. Z. Habtemariam, A. V. Parshina, T. S. Kolganova, E. Y. Safronova, and O. V. Bobreshova, “The influence of acid-base properties of dopants incorporated into the MF-4SC membranes on the characteristics of potentiometric sensors in nicotinic acid solutions ”, sorpchrom, vol. 20, no. 3, pp. 369-377, Jul. 2020.