Sikhymbayev A. E., Sikhimbayeva S. M., Zhigitekov T. A., Ermekbayeva A. T. “The Biological Structure of the Modern Dendroflora of Western Tanirtau”. Design Engineering, Nov. 2021, pp. 10059-6, http://thedesignengineering.com/index.php/DE/article/view/6056.