Dzyuba MV, Nesmelova OV, Chuiko SM. Least-squares method in the theory of matrix differential-algebraic boundary-value problems. Ukr. Mat. Zhurn. [Internet]. 2018 Feb. 25 [cited 2025 Apr. 13];70(2):280-92. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/1556