@ARTICLE{
author={Grunewald S,Stevanovic Dragan P},
year={2005},
title={Semiharmonic bicyclic graphs},
journal={APPLIED MATHEMATICS LETTERS},
volume={18},
number={11},
pages={1228-1238},
document_type={Article},
} 

@ARTICLE{
author={Dress A,Grunewald S,Stevanovic Dragan P},
year={2004},
title={Semiharmonic graphs with fixed cyclomatic number},
journal={APPLIED MATHEMATICS LETTERS},
volume={17},
number={6},
pages={623-629},
document_type={Article},
} 

@ARTICLE{
author={Dress A,Grunewald S,Gutman Ivan,Lepovic Mirko V,Vidovic Dusica},
year={2003},
title={On the number of walks in trees},
journal={MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY},
volume={},
number={48},
pages={63-85},
document_type={Article},
} 

@ARTICLE{
author={Borovicanin Bojana D,Grunewald S,Gutman Ivan,Petrovic Miroslav M},
year={2003},
title={Harmonic graphs with small number of cycles},
journal={DISCRETE MATHEMATICS},
volume={265},
number={1-3},
pages={31-44},
document_type={Article},
}