%0 Journal Article %T Performance Evaluation of Hop-Based Range-Free Localization Methods in Wireless Sensor Networks %A M. Keshtgary %A M. Fasihy %A Z. Ronaghi %J ISRN Communications and Networking %D 2011 %I Hindawi Publishing Corporation %R 10.5402/2011/485486 %U http://dx.doi.org/10.5402/2011/485486