@ARTICLE{
author={Maletic Slobodan V,Horak Danijela,Rajkovic Milan R},
year={2012},
title={Cooperation, Conflict and Higher-Order Structures of Social Networks},
journal={ADVANCES IN COMPLEX SYSTEMS},
volume={15},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Horak Danijela,Maletic Slobodan V,Rajkovic Milan R},
year={2009},
title={Persistent homology of complex networks},
journal={JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT},
volume={},
number={},
pages={-},
document_type={Article},
}