TY - JOUR AU - W. M. Mikulski TI - The natural operators lifting projectable vector fields to some fiber product preserving bundles JO - Annales Polonici Mathematici PY - 2003 SP - 261 EP - 271 VL - 81 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap81-3-4/ DO - 10.4064/ap81-3-4 LA - en ID - 10_4064_ap81_3_4 ER -