Nazyrov, Zarif, Nina Zavgorodnya, Ruslan Vovk, and D. Lotnik. 2012. “Intrinsic Pinning and Excess Conductivity of Monodomain YBa2Cu3O7-δ Single Crystals”. East European Journal of Physics, no. 991(1) (February), 65-68. https://periodicals.karazin.ua/eejp/article/view/13864.