共 5 条
[1]
Alexandrov A.D, 1936, REC MATH MOSCOU N SE, V1, P307
[2]
Andreichin E., 1983, UKR GEOM SB, V26, P13
[3]
E~mov N.V, 1948, USP MAT NAUK, V3, P47
[4]
Ivanova-Karatopraklieva I., 1995, J. Math. Sci., V74, P997
[5]
Ivanova-Karatopraklieva I., 1994, J. Math. Sci, V70, P1685, DOI DOI 10.1007/BF02110596)