@article{bbkks-eacm-02
, author = {Sergei Bespamyatnikh and Binay Bhattacharya and Mark Keil and David
Kirkpatrick and Michael Segal}
, title = {Efficient Algorithms for Centers and Medians in Interval and
Circular-arc Graphs}
, journal = {Networks}
, year = {2002}
, volume = {39}
, number = {3}
, pages = {144-152}
, url = {http://dx.doi.org/10.1002/net.10023}
}