Otto Exner Ivan Kramosil Igor Vajda Mathematical evaluation of the fit of a theory with experimental data. 407-411 1993 33 Journal of Chemical Information and Computer Sciences 3 http://pubs.acs.org/cgi-bin/archive.cgi/jcisd8/1993/33/i03/f-pdf/f_ci00013a017.pdf db/journals/jcisd/jcisd33.html#ExnerKV93