@article{lmcs:699,
    title      = {Tree Languages Defined in First-Order Logic with One Quantifier Alternation},
    author     = {Mikolaj Bojanczyk and Luc Segoufin},
    url        = {https://lmcs.episciences.org/699},
    doi        = {10.2168/LMCS-6(4:1)2010},
    journal    = {Logical Methods in Computer Science},
    issn       = {1860-5974},
    volume     = {Volume 6, Issue 4},
    eid        = 1,
    year       = {2010},
    month      = {Oct},
    keywords   = {Computer Science - Formal Languages and Automata Theory, Computer Science - Logic in Computer Science, cs.LO},
}