Col Reference--- ---------
R1 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17,347 (pe)
R2 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17,347 (pg)
R3 Hidajat B., Sutantyo W. 1972, Contr. Bosscha Obs. 44, 91
R4 Koroleva L.S. 1971, Izv. Glav. Astr. Obs. Pulkove 189-190
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R6 Barkhatova K.A., et al. 1970, Utch. Zapisky Urals Univ. 6 no 93
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