共 19 条
[1]
Acquistapace P., 1987, REND SEM MAT U PADOV, V78, P47
[2]
Acquistapace P., 1988, DIFFER INTEGRAL EQU, V1, P433
[3]
Acquistapace P., 1986, ANN SC NORM SUPER PI, V13, P75
[4]
BESALA P, 1975, ANN POL MATH, V29, P403
[8]
FUHRMAN M, 1993, ANAL TRANSITION SEMI
[9]
HYPOELLIPTIC 2ND ORDER DIFFERENTIAL EQUATIONS
[J].
ACTA MATHEMATICA UPPSALA,
1967, 119 (3-4)
:147-&
[10]
KOLMOGOROV AN, 1934, ANN MATH, V116, P116