ヴォルフガンク・ウォルター
Walter, Wolfgang (1998). Ordinary Differential Equations. Springer. ISBN 978-0387984599.
Walter, Wolfgang (2012). Differential and Integral Inequalities. Springer; Softcover reprint of 1st ed. (1970). ISBN 978-3642864070.
Redheffer, R. M., & Walter, W. (1975). Flow-invariant sets and differential inequalities in normed spaces. Applicable Analysis, 5(2), 149-161.
Acker, A., & Walter, W. (1976). The quenching problem for nonlinear parabolic differential equations. In Ordinary and partial differential equations (pp. 1-12). Springer, Berlin, Heidelberg.
Redheffer, R., & Walter, W. (1977). Invariant sets for systems of partial differential equations I. Parabolic equations. Archive for Rational Mechanics and Analysis, 67(1), 41-52.
Acker, A., & Walter, W. (1978). On the global existence of solutions of parabolic differential equations with a singular nonlinear term. Nonlinear Analysis: Theory, Methods & Applications, 2(4), 499-504.
Reichel, W., & Walter, W. (1997). Radial solutions of equations and inequalities involving the p {\displaystyle p} -Laplacian. J. Inequal. Appl, 1(1), 47-71.
Reichel, W., & Walter, W. (1999). Sturm–Liouville type problems for the p {\displaystyle p} -Laplacian under asymptotic non-resonance conditions. Journal of Differential Equations, 156(1), 50-70.