Accurate optical positions for 2978 objects from the Second Byurakan Survey (SBS) with the Digitized Sky SurveyM. D. Bicay, J. A. Stepanian, V. H. Chavushyan, L. K. Erastova, V. T. Ayvazyan, J. Seal and G. KojoianAstron. Astrophys. Suppl. Ser., 147 2 (2000) 169-173DOI: https://doi.org/10.1051/aas:2000295