@ARTICLE{Czajko_Maria_Bi-criteria_2010,
 author={Czajko, Maria and Wojciechowski, Jacek},
 volume={vol. 56},
 number={No 3},
 journal={International Journal of Electronics and Telecommunications},
 howpublished={online},
 year={2010},
 publisher={Polish Academy of Sciences Committee of Electronics and Telecommunications},
 title={Bi-criteria Gateway Placement Problem in Wireless Sensor Networks},
 URL={http://journals.pan.pl/Content/86430/PDF/28-paper.pdf},
 doi={10.2478/v10177-010-0028-x},
}