@article{DMTCS_2001_4_2_a0,
     author = {M\"uller, Martin and Niehren, Joachim and Treinen, Ralf},
     title = {The {First-Order} {Theory} of {Ordering} {Constraints} over {Feature} {Trees}},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {2000-2001},
     doi = {10.46298/dmtcs.267},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.267/}
}