共 15 条
[11]
KRASNOSELSKII, 1964, TOPOLOGICAL METHODS
[12]
LAETSCH TW, 1970, IND U MATH J, V20
[13]
LAETSCH TW, IN PRESS
[14]
Protter Murray H., 1984, MAXIMUM PRINCIPLES D, DOI [10.1007/978-1-4612-5282-5, DOI 10.1007/978-1-4612-5282-5]