by Gudoshnikov, S.A., Rudenchik, P.E., Matveets, L.V., Snigirev, O.V., Liubimov, B.Ya, Perov, N.S., Gan'shina, E.A., Antonov, A.S., D'achkov, A.L., Sedova, M.V.
Published in IEEE transactions on applied superconductivity (01.03.2001)