共 13 条
[1]
Agarwal R.P., 1986, BOUND VALUE PROBL
[3]
[Anonymous], APPL ANAL, DOI DOI 10.1080/00036819508840401
[5]
DANCER EN, 1973, ARCH RATION MECH AN, V52, P181
[6]
ELOE P. W., 2001, Commun. Appl. Anal., V5, P113