共 22 条
[12]
HILTON AJW, 1986, DISCRETE MATH, V48, P63
[14]
LINDNER C, 1993, J COMBIN DIGEST, V1, P113
[17]
LINDNER CC, 1992, CONT DESIGN THEORY C
[19]
NASHWILLIAMS CSA, IN PRESS 10TH P BRIT
[20]
NASHWILLIAMS CSA, IN PRESS J LONDON MA