共 14 条
[1]
ATKINSON FV, 1955, PAC J MATH, V5, P643
[2]
Belohorec S., 1961, MAT FYZ CASOPIS SLOV, V11, P250
[4]
Elsgol'ts L.E, 1966, INTRO THEORY DIFFERE
[6]
Hartman P., 2010, CLASSICS APPL MATH, V38
[9]
JONES J, 1956, QUART J MATH, V7, P306
[10]
LADAS G, 1970, 10 U RHOD ISL MATH D