Mixed early and late-type properties in the bar of NGC 6221: Evidence for evolution along the Hubble sequence?J. C. Vega Beltrán, W. W. Zeilinger, P. Amico, M. Schultheis, E. M. Corsini, J.G. Funes S.J., J. Beckman and F. BertolaAstron. Astrophys. Suppl. Ser., 131 1 (1998) 105-114DOI: https://doi.org/10.1051/aas:1998255