Bekker MB, Bohner MJ, Ugolʹnikov AP, Voulov HD. Parametrization of scale-invariant self-adjoint extensions of scale-invariant symmetric operators. MFAT [Internet]. 2018 Mar. 25 [cited 2025 Dec. 15];24(1):1-15. Available from: https://zen.imath.kiev.ua/index.php/mfat/article/view/679