%0 Journal Article %T Effect of an External Medium on Tumor Growth-induced Stress %A Matthias Ngwa %A Ephraim Agyingi %J IAENG International Journal of Applied Mathematics %D 2012 %I International Association of Engineers (IAENG) %U http://www.iaeng.org/IJAM/issues_v42/issue_4/IJAM_42_4_05.pdf