@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,Gutman Ivan},
year={2003},
title={The number of walks in a graph},
journal={APPLIED MATHEMATICS LETTERS},
volume={16},
number={5},
pages={797-801},
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={Dress A,Gutman Ivan},
year={2003},
title={Asymptotic results regarding the number of walks in a graph},
journal={APPLIED MATHEMATICS LETTERS},
volume={16},
number={3},
pages={389-393},
document_type={Article},
}