TY - JOUR A1 - Garcia-Segura, Guillermo A1 - Langer, Norbert A1 - Rozyczka, M. A1 - Franco, J. T1 - Shaping bipolar and elliptical planetary nebulae : effects of stellar rotation, photoionization heating and magnetic fields Y1 - 1999 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/21868 ER -