AKMAL I. SOTVOLDIYEV. KOBB-DUGLAS ISHLAB CHIQARISH FUNKSIYASI HAQIDA. Journal of new century innovations, [S. l.], v. 34, n. 1, p. 102–105, 2023. Disponível em: https://newjournal.org/new/article/view/8408. Acesso em: 24 nov. 2024.