@article{DBLP:journals/tcs/Potthoff94,
author = {Andreas Potthoff},
title = {Modulo-Counting Quantifiers Over Finite Trees},
journal = {Theor. Comput. Sci.},
volume = {126},
number = {1},
year = {1994},
pages = {97-112},
ee = {http://dx.doi.org/10.1016/0304-3975(94)90270-4},
bibsource = {DBLP, http://dblp.uni-trier.de}
}