共 4 条
[1]
GREENWOOD RE, 1968, J COMBINATORIAL THEO, V5, P422
[2]
Klamkin M. S., 1967, J COMBINAT THEORY, V3, P279
[3]
Lagrange R, 1963, B SCI MATH, V87, P29
[4]
MOSER WOJ, 1969, J COMB THEORY A, V7, P162