Karimov, Olimdjon, and Jurabek Nabiev. “Coercive Estimates and Separability for the Fourth-Order Operator in Weight Space”. Karshi Multidisciplinary International Scientific Journal, vol. 2, no. 1, Jan. 2025, pp. 8-16, https://doi.org/10.22105/kmisj.v2i1.81.