DP - MPI Library TY - JOUR AU - Koop, G. AU - Ruhm, C.J. T1 - Econometric estimation of proportional hazard models UR - http://dx.doi.org/10.1016/0148-6195(93)90039-Q T2 - Journal of Economics and Business SP - Vol. 45, No. 5 (1993), p. 421-430 CY - Amsterdam : Elsevier PY - 1993 N1 - Copyright: Copyright (c) 2003 Elsevier Inc. ER -