B. Sapayev, F.E. Saitkulov, Kh.M. Nasimov, U. Qalandarov, and K.A. Zakhidov. “METHODS FOR OBTAINING A COORDINATION COMPOUND OF NICKEL (II)-NITRATE WITH INDOLE ACETIC ACID AND STUDYING THEIR BIOLOGICAL PROPERTIES”. World Bulletin of Public Health, vol. 9, Apr. 2022, pp. 66-68, https://scholarexpress.net/index.php/wbph/article/view/801.