by Abernathy, C.R., Pearton, S.J., Ren, F., Hobson, W.S., Fullowan, T.R., Katz, A., Jordan, A.S., Kovalchick, J.
Published in Journal of crystal growth (01.10.1990)

by Katz, A, Feingold, A, El-Roy, A, Moriya, N, Pearton, S J, Rusby, A, Kovalchick, J, Abernathy, C R, Geva, M, Lane, E
Published in Semiconductor science and technology (01.07.1993)

by Lum, R. M., Klingert, J. K., Kisker, D. W., Tennant, D. M., Morris, M. D., Malm, D. L., Kovalchick, J., Heimbrook, L. A.
Published in Journal of electronic materials (01.03.1988)

by Sherma, J, Kovalchick, A J, Mack, R
Published in Journal of the Association of Official Analytical Chemists (01.05.1978)

by LUM, R. M, KLINGERT, J. K, KISKER, D. W, TENNANT, D. M, MORRIS, M. D, MALM, D. L, KOVALCHICK, J, HEIMBROOK, L. A
Published in Journal of electronic materials (1988)

by Lum, R M, Klingert, J K, Kisker, D W, Tennant, D M, Morris, M D, Malm, D L, Kovalchick, J, Heimbrook, L A
Published in Journal of electronic materials (01.01.1988)

by Headrick, RL, Levi, AF, Luftman, HS, Kovalchick, J, Feldman, LC
Published in Physical review. B, Condensed matter (15.06.1991)

by KOVALCHICK; MATTHEW J, YANG; SHAO CHI
Year of Publication 04.01.2000

by Kovalchick, Ed J
Published in Yard & garden (01.01.2005)

by KOVALCHICK, MATTHEW, J, YANG, SHAO, CHI
Year of Publication 17.09.1998