共 18 条
[1]
Bellman R., 1943, DUKE MATH J, V10, P643, DOI 10.1215/S0012-7094-43-01059-2
[2]
BIRKHOFF GD, 1922, T AM MATH SOC, V23, P95
[3]
Cesari L., 1940, ANN SCUOLA NORM SUP, V9, p163
[4]
FORD L, 1909, T AM MATH SOC, V10, P319
[5]
FORD L, 1907, ANN MATEMATICA, V13, P263
[6]
HUKUHARA M, 1934, J FS HOKKAIDO IMPERI, V2, P13
[9]
Liapounoff A, 1907, ANN FS U TOULOUSE, V9, P203, DOI DOI 10.5802/AFST.246
[10]
NORLUND NE, 1924, DIFFERENZRECHNUNG