@article{Klopot:2013ZC, author = "Klopot, Yaroslav and Oganesian, Armen and Teryaev, Oleg", title = "{Nonperturbative QCD and transition form factors}", doi = "10.22323/1.173.0036", journal = "PoS", year = 2013, volume = "Baldin ISHEPP XXI", pages = "036" }