@CONFERENCE\{IMM2006-04454,
    author       = "P. Bille and I. L. G{\o}rtz",
    title        = "Matching Subsequences in Trees",
    year         = "2006",
    booktitle    = "Proc. 6th Conference on Algorithms and Complexity ({CIAC} 2006). Lecture Notes in Computer Science",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4454-full.html"
}