@inproceedings{wads11, 
        author    = "Erin Wolf Chambers and Sandor P. Fekete and Hella-Franziska Hoffmann and Dimitri Marinakis and Joseph S.B. Mitchell and Venkatesh Sirinivasan and Ulrike Stege and Sue Whitesides",
        title     = "Connecting a Set of Circles with Minimum Sum of Radii",  
        booktitle = "In Proc. of Algorithms and Data Structures Symposium  (WADS 2011)", 
        year      = "2011",
        month     = "Aug.",
        address   = "Brooklyn, NY"
}