by Kalvatchev, Z., Tsekov, I., Kalvatchev, N.
Published in Biotechnology, biotechnological equipment (01.01.2010)

by Kalvatchev, Z, Walder, R, Garzaro, D
Published in Biomedicine & pharmacotherapy (01.01.1997)

by Kalvatchev, Z., Rösl, F.
Published in Biotechnology, biotechnological equipment (2007)

by Tsekov, I., Ferdinandov, D., Ignatova, V., Kalvatchev, Z.
Published in Biotechnology, biotechnological equipment (2009)

by Slavov, S., Kalvatchev, Z.
Published in Biotechnology, biotechnological equipment (01.01.2006)

by Kalvatchev, Z., Draganov, P.
Published in Biotechnology, biotechnological equipment (01.01.2005)

by Kalvatchev, Z., Slavov, S., Petrova, A., Simeonov, P., Hristova, L.
Published in Biotechnology, biotechnological equipment (2007)

by Tsekov, I., Kalvatchev, Z., Kulev, O., Elenkov, I., Ferdinandov, D.
Published in Biotechnology, biotechnological equipment (2008)

by Draganov, P., Mateev, G., Botev, I., Kalvatchev, Z.
Published in Biotechnology, biotechnological equipment (01.01.2006)

by Slavov, S., Kalvatchev, Z., Tsekov, I., Simeonov, P., Hristova, L., Kotsev, J., Mladenov, D., Tsvetkov, M.
Published in Biotechnology, biotechnological equipment (2008)

by Kalvatchev, Z., Draganov, P., Kalvatchev, N.
Published in Biotechnology, biotechnological equipment (01.01.2004)

by Slavov, S., Nenkov, I., Dimova, D., Simeonov, P., Hristova, L., Vladimirov, V., Kalvatchev, Z.
Published in Biotechnology, biotechnological equipment (2007)

by Moncayo, AC, Medina, GM, Kalvatchev, Z, Brault, AC, Barrera, R, Boshell, J, Ferro, C, Freier, JE, Navarro, JC, Salas, R, De Siger, J, Vasquez, C, Walder, R, Weaver, SC
Published in The American journal of tropical medicine and hygiene (01.12.2001)

by Draganov, P., Georgiev, D., Gancheva, A., Sayej, M., Kalvatchev, Z.
Published in Biotechnology, biotechnological equipment (01.01.2004)

by Walder, R, Kalvatchev, Z, Apitz-Castro, R
Published in Biomedicine & pharmacotherapy (01.01.1998)

by Kalvatchev, Z, Walder, R, Garzaro, D, Barrios, M
Published in Viral immunology (01.01.2000)

by Walder, R, Kalvatchev, Z, Garzaro, D, Barrios, M, Apitz-Castro, R
Published in Biomedicine & pharmacotherapy (1997)

by Walder, R., Kalvatchev, Z., Garzaro, D., Barrios, M.
Published in Phytotherapy research (01.02.1996)

by Kalvatchev, Z, Walder, R, Garzaro, D
Published in Acta virologica (Anglickâa verze) (01.10.1997)

by Kalvatchev, Zlatko, Slavov, Svetoslav, Shtereva, Milkana, Savova, Silvia
Published in Journal of clinical virology (01.11.2008)