@ARTICLE{
author={Gutman Ivan,Robbiano Maria,San Martin Bernardo},
year={2015},
title={Upper bound on Randic energy of some graphs},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={478},
number={},
pages={241-255},
document_type={Article},
} 

@ARTICLE{
author={Gutman Ivan,Martins Enide Andrade,Robbiano Maria,San Martin Bernardo},
year={2014},
title={Ky Fan theorem applied to Randle energy},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={459},
number={},
pages={23-42},
document_type={Article},
} 

@ARTICLE{
author={Gomes Helena,Gutman Ivan,Martins Enide Andrade,Robbiano Maria,San Martin Bernardo},
year={2014},
title={On Randic Spread},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={72},
number={1},
pages={249-266},
document_type={Article},
}