1. Hermitian positive kernels on homogeneous spaces. I;Kreĭn MG;Ukrain Mat, Akad Ukrain SSR. Inst Matematiki. Ukrain Matematicheskiĭ Z.,1949
2. Differential properties of matrix orthogonal polynomials;Cantero MJ;J Concr Appl Math,2005
3. Matrix orthogonal polynomials whose derivatives are also orthogonal
4. Christoffel transformations for matrix orthogonal polynomials in the real line and the non‐Abelian 2D Toda lattice hierarchy;Álvarez‐Fernández C;Int Math Res Not IMRN,2017
5. Matrix Inner Product Having a Matrix Symmetric Second Order Differential Operator