I. Arregui R. Oliver J.L. Ballester. , "Fast and Alfvén MHD waves in sheared coronal arcades". "9th european solar physics meeting: Magnetic fields and solar processes", Florencia, Itàlia, 1999. Dades de publicació: Magnetic fields and solar processes (Ed. A. Wilson), ESA SP-448. Pags. 221-224, 2000. ISBN 92 9092792 5. Pòster.
Terradas, J.; Oliver, R.; Ballester, J. L.. , "MHD waves in slab-like prominences: Non adiabatic effects". "8th SOHO Workshop 'Plasma Dynamics and Diagnostics in the Solar transition region and Corona'", Paris, França, 1999. Pòster.
Murawski, K.; Oliver, R.; Ballester, J. L.. , "Nonlinear fast MHD waves in coronal holes". "8th SOHO Workshop. Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona", Paris, França, 1999. Pòster.
Terradas, J.; Oliver, R.; Ballester, J. L.. , "Non adiabatic effects in solar prominence MHD waves". "8th SOHO Workshop. Plasma Dynamics and Diagnostics in the Solar Transition Region and Corona", Paris, França, 1999. Pòster.
Ballester, J. L.; Oliver, R.; Baudin, F.. , "Periodic emergence of magnetic flux as the cause of the 158-day periodicity in high energy solar flares". "Magnetic Fields and Solar Processes. 9th European Meeting on Solar Physics", Florencia, Itàlia, 1999. Pòster.
Ballester, J. L.. , "Cyclical Variability of Prominences, CMEs and Flares". "IAU Colloquium 179 'Cyclical Evolution of Solar Magnetic Fields: Advances in Theory and Observations", Kodaikanal, Índia, 1999. Sense especificar.
Terradas, J.; Oliver, R.; Ballester, J. L.. , "Non adiabatic effects in magneto-acoustic-gravity waves in the solar atmosphere.". "Magnetic Fields and Solar Processes. 9th European Meeting on Solar Physics", Florència, Itàlia, 1999. Dades de publicació: 1999ESASP.448..385T. Pòster.
Carbonell, M.. . "1999 Eusflat-Estylf Joint Conference", Palma de Mallorca, Espanya, 1999. Membre del comitè organitzador.
Oliver, R.. , "Prominence oscillations: observations and theory". "Magnetic Fields and Solar Processes. 9th European Meeting on Solar Physics", Florencia, Itàlia, 1999. Conferència convidada.