@article{lmcs:2244,
    title      = {Logics for Unranked Trees: An Overview},
    author     = {Leonid Libkin},
    url        = {https://lmcs.episciences.org/2244},
    doi        = {10.2168/LMCS-2(3:2)2006},
    journal    = {Logical Methods in Computer Science},
    issn       = {1860-5974},
    volume     = {Volume 2, Issue 3},
    eid        = 2,
    year       = {2006},
    month      = {Jul},
    keywords   = {Computer Science - Logic in Computer Science, Computer Science - Databases, H.2.3, H.2.1, I.7, F.2.3, F.4.1, F.4.3},
}