TY - JOUR AU - A. Friedman TI - Free Boundary Problems Associated with Multiscale Tumor Models JO - Mathematical modelling of natural phenomena PY - 2009 SP - 134 EP - 155 VL - 4 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20094306/ DO - 10.1051/mmnp/20094306 LA - en ID - MMNP_2009_4_3_a5 ER -