                                                                                   2
*****         .
*****                        . 

  :

            d(1)/dt + p1*x(1) = f1(z),  p1 = (n-1)/TAU1  

            dx(2)/dt + p1*x(2) = p1*x(1)
            --------------------
            --------------------
            dx(n-1)/dt + p1*x(n-1) = p1*x(n-2)

            dy(1)/dt + p2*y(1) = f2(z),  p2 = (m-1)/TAU2

            dy(2)/dt + p2*y(2) = p2*y(1)
            --------------------
            --------------------
            dy(m-1)/dt + p2*y(m-1) = p2*y(m-2)

            dz/dt + TETA*z = p1*x(n-1) + p2*y(m-1).


 z(t) -    ,   

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

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

ALFA1, BETA1, GAMA1, TAU1,  ALFA2, BETA2, GAMA2, TAU2, TETA -  .
           
     z(t)    u(t), 
     :

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



