a_or_b            196 old_code/tumor_growth/tumor_growth.h 		      const double a_or_b, 
a_or_b            460 old_code/tumor_growth/tumor_growth.h 		    const double gamma, const double a_or_b, const Growth scalar_type,
a_or_b            479 old_code/tumor_growth/tumor_growth.h     mass_matrix_rhs = uniform_time_step * gamma * a_or_b;