Sh.N.Xamitov, O.U.Pulatov, D.M.Uzakova. Ikkinchi tartibli chiziqlarning markazi . SciEdu [Internet]. 2026Apr.24 [cited 2026Apr.26];7(4):44-6. Available from: https://openscience.uz/index.php/sciedu/article/view/8701