by Markova-Velichkova, M., Lazarova, T., Tumbalev, V., Ivanov, G., Kovacheva, D., Stefanov, P., Naydenov, A.
Published in Chemical engineering journal (Lausanne, Switzerland : 1996) (01.09.2013)

by RADEV, D. D, MARINOV, M, TUMBALEV, V, RADEV, I, KONSTANTINOV, L
Published in Physica. C, Superconductivity (15.01.2005)

by Kalaydjiev, K, Lovthinov, V, Dimitrov, D, Kirov, M, Baychev, M, Popov, Chr, Radeva, D D, Marinov, M, Tumbalev, V, Radev, I, Vanderbemden, Ph
Published in Journal of Optoelectronics and Advanced Materials (01.02.2005)

by Radev, D.D., Marinov, M., Tumbalev, V., Radev, I., Konstantinov, L.
Published in Physica. C, Superconductivity (2005)

by Kalaydjiev, K., Lovchinov, V., Dimitrov, D., Kirov, M., Baychev, M., Popov, C., Radev, D. D., Marinov, M., Tumbalev, V., Radev, I., Vanderbemden, Philippe
Year of Publication 2005