2018

1. The effect of growth rate in pure-bred and cross-bred boars on their semen characteristics
artykuł [AUT.] Bogdan Szostak, [AUT.] Łukasz Przykaza , [AUT.] Apostol Apostolov . Bulgarian Journal of Agricultural Science 2018 T. 24 Nr 2 s. 109-114

2016

2. Effect of high levels distillers dried grains with solubles in performance of fattening pigs
artykuł [AUT.] Danail Kanev , [AUT.] Radka Nedeva , [AUT.] S. Ivanova , [AUT.] Bogdan Szostak. Bulgarian Journal of Agricultural Science 2016 T. 22 Nr 1 s. 135-139
3. Analysis of changes in lean meat content of fattening pigs on selected farms in the Lublin Voivodeship in 2012-2014
artykuł [AUT.] Bogdan Szostak, [AUT.] Piotr Witkowski , [AUT.] Apostol Apostolov . Bulgarian Journal of Agricultural Science 2016 T. 22 Nr 2 s. 293-296

2015

4. The influence of the libido of Polish Large White boars on their ejaculates
artykuł [AUT.] Bogdan Szostak, [AUT.] Apostol Apostolov , [AUT.] Y. Marchev . Bulgarian Journal of Agricultural Science 2015 T. 21 Nr 2 s. 394
5. Assessment of quality and energy of solid biofuel production
artykuł [AUT.] Ignacy Niedziółka, [AUT.] Magdalena Kachel-Górecka, [AUT.] Artur Kraszkiewicz, [AUT.] Mieczysław Szpryngiel, [AUT.] Mariusz Szymanek, [AUT.] Beata Zaklika . Bulgarian Journal of Agricultural Science 2015 T. 21 Nr 2 s. 461-466
6. The effect of season on semen parameters in Polish Landrace and Polish Large white boars and phenotypic correlations between semen characteristics in different seasons
artykuł [AUT.] Bogdan Szostak, [AUT.] Łukasz Przykaza , [AUT.] Apostol Apostolov . Bulgarian Journal of Agricultural Science 2015 T. 21 Nr 5 s. 1049-1053
7. Analysis of selected physical and chemical properties of plant biomass of agricultural origin in terms of its energy use

2014

8. Content of biogenic elements in the soil at different sites on a farm
artykuł [AUT.] Bogdan Szostak, [AUT.] Apostol Apostolov . Bulgarian Journal of Agricultural Science 2014 T. 20 Nr 5 s. 1245-1249
9. Morphometric characteristics of the ovaries of gilts 
 depending on their growth rate and body weight at 
 slaughter
artykuł [AUT.] Bogdan Szostak, [AUT.] Apostol Apostolov . Bulgarian Journal of Agricultural Science 2014 T. 20 Nr 3 s. 699-702
10. Rheological properties of gluten obtained from Polish wheat cultivars
11. Agricultural total factor productivity change and its determinants in European Union countries
artykuł [AUT.] Katarzyna Domańska, [AUT.] Tomasz Kijek, [AUT.] Anna Nowak. Bulgarian Journal of Agricultural Science 2014 T. 20 Nr 6 s. 1273-1280
12. Weed biodiversity in field pea under reduced tillage and different mineral fertilization conditions
artykuł [AUT.] Małgorzata Haliniarz, [AUT.] Dorota Gawęda, [AUT.] Cezary Kwiatkowski, [AUT.] Mariusz Frant , [AUT.] Monika Różańska-Boczula. Bulgarian Journal of Agricultural Science 2014 T. 20 Nr 6 s. 1340-1348
13. Effect of genotype and nitrogen fertilization on grain yield and quality of spring barley intended for health food use
artykuł [AUT.] Kazimierz Noworolnik , [AUT.] Anna Wirkijowska, [AUT.] M. Mikos-Szymańska . Bulgarian Journal of Agricultural Science 2014 T. 20 Nr 3 s. 594-598

2013

14. Length of productive life and lifetime reproduction efficiency in sows with different origin
artykuł [AUT.] Apostol Apostolov , [AUT.] Bogdan Szostak, [AUT.] Nadeżda Palova , [AUT.] I. Dimitrov . Bulgarian Journal of Agricultural Science 2013 T. 19 Nr 5 s. 1120-1125
15. Effect of concentrate supplement on slaughter value and meat quality of Limousin suckler beef reared on pasture until the age of 8 months
artykuł [AUT.] Mariusz Florek, [AUT.] Piotr Stanek, [AUT.] Zygmunt Litwińczuk, [AUT.] Paweł Żółkiewski. Bulgarian Journal of Agricultural Science 2013 T. 19 Nr 5 s. 1112-1119

2004

16. Reproductive qualities of some pig breeds raised in the nucleus and reproductive herds in Poland
artykuł [AUT.] Bogdan Szostak, [AUT.] Stoicho Slanev , [AUT.] Apostol Apostolov . Bulgarian Journal of Agricultural Science 2004 s. 383-387

2003

17. Season and age effect on sperm quality and quantity in boars from the danube white breed
artykuł [AUT.] Y. Marchev , [AUT.] Apostol Apostolov , [AUT.] Bogdan Szostak. Bulgarian Journal of Agricultural Science 2003 s. 703-706
18. Possibilities of substituting soybean meal and fish meal with maize gluten in the compound feeds for growing pigs
artykuł [AUT.] Danail Kanev , [AUT.] Radka Nedeva , [AUT.] Bogdan Szostak, [AUT.] Marincho Kirov , [AUT.] Y. Marchev . Bulgarian Journal of Agricultural Science 2003 s. 257-260
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