共 30 条
[3]
[Anonymous], 1992, MATH PROBLEMS RELATI
[4]
Bogovskii M. E, 1979, SOVIET MATH DOKL, V20, P1094
[5]
BOGOVSKII ME, 1980, T SEM SL SOBOLEV, V80, P5
[6]
BORCHERS W, 1992, LECT NOTES MATH, V1530, P71
[9]
Borchers W., 1990, HOKKAIDO MATH J, V19, P67
[10]
CATTABRIGA L., 1961, REND SEMIN MAT U PAD, V31, P308