@inproceedings{Solovtsova:2013g1, author = "Solovtsova, Olga", title = "{R-related quantities in QCD and the Adler D-function}", doi = "10.22323/1.173.0016", booktitle = "Proceedings of XXI International Baldin Seminar on High Energy Physics Problems {\textemdash} PoS(Baldin ISHEPP XXI)", year = 2013, volume = "173", pages = "016" }