@inproceedings{michalski_kazienko_jankowski_2013, 
  title={Convince a Dozen More and Succeed -- The Influence in Multi-layered Social Networks}, 
  DOI={10.1109/sitis.2013.85}, 
  publisher={IEEE}, 
  author={Michalski and Kazienko and Jankowski}, 
  year={2013}
  }