(1)
V.A. Shklovskij and O.V. Dobrovolskiy, Determination of the coordinate dependence of a pinning potential from the microwave experiment with vortices, Low Temp. Phys. 39, 120–124, (2013) [Fiz. Nizk. Temp. 39, 162-167, (2013)] DOI: https://doi.org/10.1063/1.4791773.