1.
Avezov AX, Kurbonova YR. Bir Fridrixs model operatorining muhim spektrdan tashqaridagi xos qiymatlari soni va joylashgan o’rni. SciEdu [Internet]. 2023Jun.8 [cited 2024Oct.11];4(5):34-45. Available from: https://openscience.uz/index.php/sciedu/article/view/5689