TY - JOUR AU - Díaz-Cano Ocaña, Antonio AU - Gonzalez Gascón, F. PY - 2006 DO - 10.1016/j.physleta.2006.05.027 SN - 0375-9601 UR - https://hdl.handle.net/20.500.14352/49878 T2 - Physics Letters A AB - It is shown that for particles moving in a plane under the action of attracting central potentials and a perturbing force (potential but not central),orbits representing the falling down of the particle to the center of force exist. LA - eng M2 - 199 PB - Elsevier KW - Collision orbits KW - Perturbation of central potentials TI - Collision orbits in the presence of perturbations. TY - journal article VL - 358 ER -