http://www.stanford.edu/~anttila/research/K-168-10-3-05-single.pdf http://www.stanford.edu/~anttila/research/helsinki.pdf http://www.stanford.edu/~anttila/research/torders/t-order-manual.pdf http://roa.rutgers.edu/ http://www.stanford.edu/~anttila/research/Anttila-Fong-VariationAmbiguity.pdf http://www.stanford.edu/~anttila/research/roa-425-anttila-2.pdf http://roa.rutgers.edu/files/416-0900/roa-416-anttila-2.pdf http://roa.rutgers.edu/ http://www.lingsoft.fi/cgi-bin/engcg http://www.stanford.edu/~anttila/