NAGY, Oskar - SEIDEL, Herbert - KOVÁČ, Gabriel - PAULÍKOVÁ, Iveta - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária. Dynamics of acid-base balance and blood gases in calves up to six month of their age. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 573-578.

FIĽAKOVSKÁ, M. - KOVÁČ, Gabriel - NAGY, Oskar - LINK, Róbert - MUDROŇ, Pavol - PAULÍKOVÁ, Iveta - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária. Haematological parameters in calves hospitalised at II. Internal clinic. In: The 5th MIDDLE-EUROPEAN BUIATRICS CONGRESS, XV. MAGYAR BUIATRIKUS KONGRESSZUS, Hajdúszoboszló, 2004, 2.-5. júna : The effect of herd health of cattle, sheep and goat on production efficiency. 2004. 2004. ISBN 963-216-200-5, s. 584-586.

JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária - NAGY, Oskar - SEIDEL, Herbert - LINK, Róbert - KOVÁČ, Gabriel. Lead distribution in muscles and viscera of cattle. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 589-590.

LINK, Róbert - KOVÁČ, Gabriel - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária - HÚSKA, Miroslav. Preventive and therapeutic effect of Bacillus licheniformis in calves with diarrhoea syndrome. In: The 5th MIDDLE-EUROPEAN BUIATRICS CONGRESS, XV. MAGYAR BUIATRIKUS KONGRESSZUS, Hajduszoboszlo, 2004, 2.-5. júna : The effect of herd health of cattle, sheep and goat on production efficiency. 2004. 2004. ISBN 963-216-200-5, s. 568-572.

KONVIČNÁ, Jana - KOVÁČ, Gabriel - JESENSKÁ, Mária - HIŠČÁKOVÁ, Mária - NAGY, Oskar - SEIDEL, Herbert - LINK, Róbert. Relationships between concentrations of selenium and glutathione peroxidase activity in the whole blood of dairy cows. In: The 5th MIDDLE-EUROPEAN BUIATRICS CONGRESS, XV. MAGYAR BUIATRIKUS KONGRESSZUS, Hajduszoboszlo, 2004, 2.-5. júna : The effect of herd health of cattle, sheep and goat on production efficiency. 2004. 2004. ISBN 963-216-200-5, s. 579-583.

REICHEL, Peter - ALEMU, Asefa Asmare - BULECA, Ján - KOVÁČ, Gabriel - ŠČUROKOVÁ, Eva - ZACHAR, Peter. Serum isoenzyme activity of lactate dehydrogenase in dairy cows. In: The 5th MIDDLE-EUROPEAN BUIATRICS CONGRESS, XV. MAGYAR BUIATRIKUS KONGRESSZUS, Hajduszoboszlo, 2004, 2.-5. júna : The effect of herd health of cattle, sheep and goat on production efficiency. 2004. 2004. ISBN 963-216-200-5, s. 562-567.

HIŠČÁKOVÁ, Mária - JESENSKÁ, Mária - NAGY, Oskar - SEIDEL, Herbert - LINK, Róbert - KOVÁČ, Gabriel. Study of cadmium concentrations in cattle in Slovakia. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 587-588.

KOVÁČ, Gabriel - NAGY, Jozef - SEIDEL, Herbert - REICHEL, Peter - HISIRA, Vladimír - VRÁBEL, K. - NOVOTNÝ, Jaroslav - TÓTH, Mikuláš. The importance of preventive diagnosis in a dairy farm with increasing milk production. In: Proceedings of the 5th Middle-European Buiatrics Congress "The Effect of Herd Health of Cattle, Sheep and Goat on Production Efficiency", June 2 - 5. 2004, Hajdúszoboszló, Hungary. 1. vyd. Eger : Hungarian Association for Buiatrics, 2004. 2004. ISBN 963-216-200-5, s. 204-212.

ŠUTIAKOVÁ, Irena - MARAČEK, Imrich - VLČKOVÁ, Radoslava - VRÁBEĽ, P. - KOVÁČ, Gabriel - ŠUTIAK, Václav - BAKŠIOVÁ, Lenka. Využitie izoenzýmov Laktátdehydrogenázy ako biomarkerov pri ochrane zdravia oviec [Use isoenzymes of Lactate dehydrogenase as biomarkers in prevention of sheep´s health]. In: VI. KONFERENCE DDD 2004 - Přívorovy dny, Františkovy Lázně 5.-7.4.2004. Praha. 2004. ISBN 80-00-01633-5, s. 157-160.

HÚSKA, Miroslav - KOVÁČ, Gabriel - LINK, Róbert - REICHEL, Peter - NOVOTNÝ, Jaroslav - HISIRA, Vladimír. Aktívna ochrana GIT-u pred E.coli po aplikácii probiotík u prasiat [Active protection GIT of swine against E.coli after application probiotics]. In: Chov hospodárskych zvierat v podmienkach EÚ. Nitra, 2004. 2004. s. 233-236.