by Zolotukhin, I. V., Golev, I. M., Popov, A. A., Ievlev, V. P.
Published in Technical physics letters (01.08.2002)

by Zolotukhin, I. V., Golev, I. M., Belonogov, E. K., Ievlev, V. P., Derzhnev, D. A., Markova, A. E.
Published in Technical physics letters (01.12.2003)

by Zolotukhin, I. V., Sokolov, Yu. V., Ievlev, V. P.
Published in Physics of the solid state (01.03.1998)