1999BASI...27..443S
1999A&A...345..203B
1999ApJ...515..356B
1999ApJ...527..360B
1999MNRAS.303..783D
1999A&A...346..181M
1999ApJ...513L.131M
1999AJ....118.3032N
1999A&A...345..221P
1999AJ....117..521V
1999A&AS..139..173B
1999JOSAA..16..872B
1999PASP..111..111C
1999ApJ...510..505C
1999A&AS..138..355D
1999MNRAS.303..773D
1999OptCo.160...27D
1999PASP..111.1321G
1999MNRAS.304..218L
1999PASP..111..238M
1999A&AS..138..135M
1999A&AS..137..543P
1999ApOpt..38.6055P
1999PASP..111..990R
1999ApOpt..38.4213S
1999ApOpt..38.7128S
1999Natur.398..487T
1999MNRAS.306..353T