@ARTICLE{
author={Cvetkovic Zorica D,Perovic Gligorije},
year={2006},
title={PERVC method for determination of variance components},
journal={Proceedings of the 14th National Conference of Astronomers of Serbia and Montenegro},
volume={},
number={80},
pages={331-335},
document_type={Proceedings Paper},
} 

@ARTICLE{
author={Cvetkovic Zorica D,Perovic Gligorije},
year={2000},
title={Study of a temperature effect on the determination of different longitudes based on a Dansonove astronomical lab survey},
journal={PUBLICATION OF THE ASTRONOMICAL OBSERVATORY OF BELGRADE, NO 67 - PROCEEDINGS OF THE SECOND SERBIAN-BULGARIAN ASTRONOMICAL MEETING},
volume={},
number={},
pages={9-12},
document_type={Proceedings Paper},
}