Global existence and asymptotic stability for an elliptic-parabolic free boundary problem: An application to a model of tumor growth Borys BazaliyAvner Friedman 35B2035B4035Q8035R3580A2292C15elliptic-parabolic systemfree boundary problemasymptotic stabilitytumor growth Indiana University Mathematics Journal 2003 text pdf 10.1512/iumj.2003.52.2317 10.1512/iumj.2003.52.2317 en Indiana Univ. Math. J. 52 (2003) 1265 - 1304 state-of-the-art mathematics http://iumj.org/access/