@ARTICLE{
author={Ponjican Ondrej O,Bajkin Andjelko M,Jacimovic Goran P,Tomic Milan D,Savin Lazar D,Dedovic Nebojsa M,Simikic Mirko D},
year={2012},
title={Tillage quality affecting physical characteristics, number of plants and carrot root yield under flat and ridge cultivation},
journal={JOURNAL OF FOOD AGRICULTURE & ENVIRONMENT},
volume={10},
number={2},
pages={304-311},
document_type={Article},
} 

@ARTICLE{
author={Ponjican Ondrej O,Bajkin Andjelko M,Dimitrijevic Aleksandra Z,Savin Lazar D,Tomic Milan D,Simikic Mirko D,Dedovic Nebojsa M,Zoranovic Miodrag S},
year={2011},
title={The effects of working parameters and tillage quality on rotary tiller specific work requirement},
journal={AFRICAN JOURNAL OF AGRICULTURAL RESEARCH},
volume={6},
number={31},
pages={6513-6524},
document_type={Article},
} 

@ARTICLE{
author={Dimitrijevic Aleksandra Z,Devic Milan,Bajkin Andjelko M,Ponjican Ondrej O,Barac Sasa R},
year={2011},
title={Energy Efficiency of the Lettuce Greenhouse Production},
journal={ACTUAL TASKS ON AGRICULTURAL ENGINEERING},
volume={39},
number={},
pages={463-472},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Ponjican Ondrej O,Bajkin Andjelko M,Dimitrijevic Aleksandra Z,Mileusnic Zoran I,Miodragovic Rajko M},
year={2011},
title={The Influence of Soil Mulching and Greenhouse Covering Material on the Temperature Distribution in Lettuce Production},
journal={ACTUAL TASKS ON AGRICULTURAL ENGINEERING},
volume={39},
number={},
pages={393-401},
document_type={Proceedings Paper},
}