For citations:

Dvorkina M.Ya., Dzhigo A.A., Maistrovitch T.V. Theoretical Foundations of the National Standard «Library Statistics: Statistical Rates and Measurement Units». Bibliotekovedenie [Russian Journal of Library Science]. 2014;(4):21-28. (In Russ.) https://doi.org/10.25281/0869-608X-2014-0-4-21-28