@article{PR80,
AUTHOR = {Paul, W.J. and Reischuk, R.},
TITLE = {On Alternation II},
VOLUME = {14},
YEAR = {1980},
PAGES = {391--403},
SERIES = {Acta Informatica 1980},
EE = {http://www.springerlink.com/content/g5513071x065742h/},
}