Four-Year Observations of T Tauri With Adaptive Optics Roddier, C. ; Roddier, F. ; Graves, J. E. ; Northcott, M. J. ; Close, L. ; Surace, J. ; Veran, J. P. Abstract Publication: European Southern Observatory Conference and Workshop Proceedings Pub Date: 1999 Bibcode: 1999ESOC...56..389R