共 19 条
[1]
ABLOWITZ MJ, 1974, STUD APPL MATH, V53, P249
[4]
Beals R., 1988, MATH SURVEYS MONOGRA, VVolume 28
[7]
Diki L.A., 1976, Functional Analysis and Its Applications, V10, P259, DOI [10.1007/BF01076025, DOI 10.1007/BF01076025]
[8]
DURKOWSKI V, 1987, THESIS U MINNESOTA
[9]
Faddeev LD., 1964, Trans. Math. Inst. Acad. Sci. USSR, V73, P314