共 9 条
[3]
EKESBO I., 1966, Acta Agriculturae Scandinavica, V15
[4]
ELVEBACK L, 1985, J AM STAT ASSOC, V53, P420
[6]
KLEINBAUM DG, 1982, EPIDEMIOLOGIC RES PR, P345
[7]
NYLANDER PPS, 1975, HUMAN MULTIPLE REPRO, P98
[8]
PHILIPSSON J, 1976, Acta Agriculturae Scandinavica, V26, P230
[9]
PHILIPSSON J, 1976, Acta Agriculturae Scandinavica, V26, P165