@ARTICLE{
author={Protic Rade,Miric Mladen,Protic Rade,Jovanovic Zivota,Jovin Predrag},
year={2007},
title={The test weight of several winter wheat genotypes under various sowing dates and nitrogen fertilizer rates},
journal={ROMANIAN AGRICULTURAL RESEARCH},
volume={24},
number={},
pages={43-46},
document_type={Article},
} 

@ARTICLE{
author={Protic Rade,Jovin Predrag,Protic Rade,Jankovic Snezana M,Jovanovic Zivota},
year={2007},
title={Mass of 1,000 grains in several winter wheat genotypes, at different dates of sowing and rates of nitrogen fertilizer},
journal={ROMANIAN AGRICULTURAL RESEARCH},
volume={24},
number={},
pages={39-42},
document_type={Article},
}