TY - JOUR A1 - Langer, Norbert A1 - Heger, Alexander A1 - Garcia-Segura, Guillermo T1 - Massive stars : the pre-supernova evolution of internal and circumstellar structure Y1 - 1998 ER - TY - JOUR A1 - Garcia-Segura, Guillermo A1 - Langer, Norbert A1 - Rozyczka, M. A1 - MacLow, Mordecai-Mark T1 - The effects of rotation and stellar magnetic fields on the nebular shapes : LBV nebulae and PNe Y1 - 1998 ER - TY - JOUR A1 - Langer, Norbert A1 - Garcia-Segura, Guillermo A1 - MacLow, Mordecai-Mark T1 - Giant outbursts of luminous blue variables and the formation of the homunculus nebula around eta carinae Y1 - 1999 ER - TY - JOUR A1 - Garcia-Segura, Guillermo A1 - Langer, Norbert A1 - Rozyczka, M. A1 - Franco, J. A1 - MacLow, Mordecai-Mark T1 - Hydrodynamics of ring nebulae : magnetic vs. non-magnetic hydro-models Y1 - 1999 ER - 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 ER - TY - JOUR A1 - Garcia-Segura, Guillermo A1 - Franco, J. A1 - Lopez, J. A. A1 - Langer, Norbert A1 - Rozyczka, M. T1 - MHD Models for planetary nebulae Y1 - 2000 ER -