TY - JOUR AU - Janyška, Josef TI - Natural vector fields and 2-vector fields on the tangent bundle of a pseudo-Riemannian manifold JO - Archivum mathematicum PY - 2001 SP - 143 EP - 160 VL - 37 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_2001__37_2_a5/ LA - en ID - ARM_2001__37_2_a5 ER -