TY - JOUR AU - Johnson, N. L. TI - A Note on Net Replacement in Transposed Spreads JO - Canadian mathematical bulletin PY - 1985 SP - 469 EP - 471 VL - 28 IS - 4 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-056-9/ DO - 10.4153/CMB-1985-056-9 ID - 10_4153_CMB_1985_056_9 ER -