Nurabaev B. U., Xamidov N. M., and Niyetullaev A. Q. “STUDYING THE TERMS OF PRODUCTION AND USE OF A COMBINED SEEDER”. Spectrum Journal of Innovation, Reforms and Development, vol. 9, Nov. 2022, pp. 402-5, https://sjird.journalspark.org/index.php/sjird/article/view/387.