1998ApJ...504L..39B
1998MNRAS.297..462B
1998AJ....116..981D
1998ApJ...496..484H
1998AJ....116.2536H
1998ApJ...509L..45K
1998ApJ...507L.149M
1998A&A...331..619P
1998A&A...332..268S
1998A&A...335..261V
1998A&A...336..980S
1998ApJ...496..550A
1998A&AS..129..609B
1998ApOpt..37.5132D
1998ApOpt..37.8129L
1998PASP..110..995T