Javier Esparza Stefan Kiefer Michael Luttenberger An Extension of Newton's Method to <i>omega</i> -Continuous Semirings. 157-168 2007 conf/dlt/2007 Developments in Language Theory http://dx.doi.org/10.1007/978-3-540-73208-2_17 db/conf/dlt/dlt2007.html#EsparzaKL07