Ergasheva R.U., and Rakhmonova D. S. “Synthesis and Research of Coordination Compounds of Co (II), Ni (II), Cu (II) Salts With 2-(3- Hydroxypropyl) Benzimidazole”. Eurasian Journal of Physics,Chemistry and Mathematics, vol. 12, Nov. 2022, pp. 113-11, https://geniusjournals.org/index.php/ejpcm/article/view/2690.