@ARTICLE{
author={Hou YP,Gutman Ivan,Woo CW},
year={2002},
title={Unicyclic graphs with maximal energy},
journal={LINEAR ALGEBRA AND ITS APPLICATIONS},
volume={356},
number={},
pages={27-36},
document_type={Article},
} 

@ARTICLE{
author={Hou YP,Gutman Ivan},
year={2001},
title={Hyperenergetic line graphs},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={},
number={43},
pages={29-39},
document_type={Article},
} 

@ARTICLE{
author={Gutman Ivan,Hou YP},
year={2001},
title={Bipartite unicyclic graphs with greatest energy},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={},
number={43},
pages={17-28},
document_type={Article},
}