@inbook {IOPORT.05286857,
    author       = {Diekert, Volker and Horsch, Martin and Kufleitner, Manfred},
    title        = {On first-order fragments for Mazurkiewicz traces.},
    year         = {2007},
    booktitle    = {Half a century of inspirational research. Honoring the scientific influence of Antoni Mazurkiewicz.},
    isbn         = {978-1-58603-805-2},
    pages        = {1-29},
    publisher    = {Amsterdam: IOS Press},
    abstract     = {Reprint from Fundam. Inform. 80, No. 1--3, 1--29 (2007; Zbl 1128.03018).},
    identifier   = {05286857},
}