@INPROCEEDINGS{
        NPalenex03,
        AUTHOR = "G. Navarro and R. Paredes",
        TITLE = "Practical Construction of Metric $t$-Spanners",
        BOOKTITLE = "Proc. 5th Workshop on Algorithm Engineering and Experiments (ALENEX)",
        YEAR = "2003",
	PUBLISHER = "SIAM Press",
        PAGES = "69--81"
    }