\Bibitem{BodMed69} \by V.~K.~Bodulinskii, Yu.~A.~Medvedev \paper Electromagnetic disturbance caused by expanding ideally conducting sphere in a magnetic field \jour Prikl. Mekh. Tekh. Fiz. \yr 1969 \vol 10 \issue 6 \pages 102--104 \mathnet{http://mi.mathnet.ru/pmtf8114} \transl \jour J. Appl. Mech. Tech. Phys. \yr 1969 \vol 10 \issue 6 \pages 932--935 \crossref{https://doi.org/10.1007/BF00907928}