Structure elucidation of organic compounds. Mass spectrometry ( electron ionization, chemical ionization, fast atom bombardement, matrix assisted laser desorption/ionization, gas chromatography /mass spectrometry) of biomolecules, mainly saccharides, their conjugates and derivatives.

The B/E linked scan of FAB spectra: a powerful tool for sequence analysis of oligosaccharides.
V. Kováčik, L. K. Pannell and P. Kováč
Org. Mass Spectrom. 27, 159-160 (1992)

Loss of internal 1→6 substituted monosaccharide residues from underivatized and per-O-methylated trisaccharides.
L. Brull, W. Heerma, J. Thomas-Oates, J. Haverkamp, V. Kováčik, P. Kováč
J. Amer. Soc. Mass Spectrom. 8, 43-49 (1997).

Linkage determination of alditol disaccharides using high-energy collision-induced dissociation spectra of sodium cationized molecules.
V. Kováčik, J. Hirsch, W. Heerma
Rapid Commun.Mass Spectrom. 11, 1353-1356 (1997).

Sodium-cationized oligosaccharides do not appear to undergo "internal residue loss" rearrangement" processes on tandem mass spectrometry.
L. P. Brull, V. Kováčik, J. E. Thomas-Oates, W. Heerma, J. Haverkamp
Rapid Commun. Mass Spectrom. 12, 1520-1532 (1998).

Chemical ionization mass spectra of acetals of beta-glycopyranosyl nitromethanes.
V. Kováčik, V. Pätoprstý, L. Petruš, V. Ovcharenko, K. Pihlaja
J. Mass Spectrom. 35, 634-638 (2000).

The Use of Mass Frontier Software in the Elucidation of Electrospray Tandem Mass Spectrometry Fragmentation of [M+Na]⁺ Ions of Oligomeric Lipopolysaccharide Models.
V. Kováčik, V. Pätoprstý, J. Čáslavský, J. Chmelík, R. Mistrík, P. Kováč
Proceedings of 50th ASMS Conference on Mass Spectrometry and Allied Topics, Orlando, Florida, June 2-6, 2002.

Electron Impact Mass Spectrometric Study of Monomeric Models of Lipopolysaccharides of Vibrio cholerae O:1, Serotypes of Ogawa and Inaba.
V. Kováčik, V. Pätoprstý, P. Oksman, R. Mistrík, P. Kováč
Proceedings of 50th ASMS Conference on Mass Spectrometry and Allied Topics, Orlando, Florida, June 2-6, 2002.