TY - JOUR AU - Cai, Jianping TI - Hopf bifurcation in the IS-LM business cycle model with time delay JO - Electronic journal of differential equations PY - 2005 VL - 2005 UR - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a98/ LA - en ID - EJDE_2005__2005__a98 ER -