                                                                                       2

*****   ,    
                
          :   

             du/dt = f1(u(t-TAU1)) + f2(u(t-TAU2)) - TETA*u.  

    

f1(u) = ALFA1/(1 + BETA1*u^GAMA1),  

f2(u) = ALFA2/(1 + BETA2*u^GAMA2),  

ALFA1, BETA1, GAMA1, TAU1,  ALFA2, BETA2, GAMA2, TAU2, TETA -  .
          
*****  








