F. V. Atkinson

• Discrete and continuous boundary problems
• Multiparameter eigenvalue problems
• Multiparameter Eigenvalue Problems
• Ordinary differential equations and operators
• Discrete and Continuous Boundary Problems : Mathematics in Science and Engineering
• Diskretnye i nepreryvnye granichnye zadachi
• Multiparameter Spectral Theory for Sturm-Liouville Operators (Pitman Monographs & Surveys in Pure & Applied Mathematics.)