1 ................... WEBDA               http://www.univie.ac.at/webda/
 2 2000A&AS..141...79A Ahumada et al.
 3 1991A&A...241...69A Alfaro & Delgado 
 4 2003A&A...402..549B Baume et al.        Cat. <J/A+A/402/549>
 5 2004MNRAS.347..625C Carraro & Munari
 6 1997AJ....113..713D Delgado et al. 
 7 1979A&AS...37..345F FitzGerald et al.   using mean values from 
 8 1996AJ....111.1609F Forbes & Short
 9 1970PDDO....4....1H Hagen 
10 1977A&AS...30..279H Herbst & Havlen 
11 2001AJ....122..257K Kalirai et al. 
12 1971A&A....15..439L Lindoff 
13 1969MNRAS.146..101L Lloyd Evans 
14 ................... Lynga 1987          1987, Open Cluster Data 5th Edition, See Cat. <VII/229>
15 1973A&AS...10..135M Moffat & Vogt 
16 1975A&AS...20...85M Moffat & Vogt
17 1975A&AS...20..125M Moffat & Vogt
18 1975A&AS...20..155M Moffat & Vogt
19 2001A&A...373..153P Paunzen & Maitzen   Cat. <J/A+A/373/153>
20 1991A&AS...90..195P Perry et al.
21 2000A&A...360..529P Piatti et al.       Cat. <J/A+A/360/529>
22 2001A&A...370..931P Piatti et al.       Cat. <J/A+A/370/931>
23 2001A&A...369..511S Sanner et al.       Cat. <J/A+A/369/511>
24 1982AJ.....87.1197S Schmidt 
25 1985MNRAS.212..591S Shobbrook 
26 1999AJ....117..937S Subramaniam & Sagar
27 1981AJ.....86.1500S Stetson
28 2001NewA....6..293T Tadross
29 1970A&A.....5..298T The & Stokes
30 1997A&AS..124...13V Vazquez et al.      Cat. <J/A+AS/124/13>
31 1972A&AS....7..133V Vogt & Moffat 
32 1987MNRAS.229...31W Walker 
33 1969MNRAS.146..329W Wesselink 
34 ................... this work.