@ARTICLE{
author={Ramane Harishchandra S,Walikar HB,Rao SB,Acharya BD,Hampiholi PR,Jog SR,Gutman Ivan},
year={2005},
title={Spectra and energies of iterated line graphs of regular graphs},
journal={APPLIED MATHEMATICS LETTERS},
volume={18},
number={6},
pages={679-682},
document_type={Article},
} 

@ARTICLE{
author={Gutman Ivan,Hou Y,Walikar HB,Ramane Harishchandra S,Hampiholi PR},
year={2000},
title={No Huckel graph is hyperenergetic},
journal={JOURNAL OF THE SERBIAN CHEMICAL SOCIETY},
volume={65},
number={11},
pages={799-801},
document_type={Article},
}