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