                                                                                          
***    E1(N,K) 
     ALFA,BETA,GAMA -  .

      
*********************************************************************

 :

0<=t<=tMAX, i=1,2,...,n,

dx(i)/dt = x(i)*[ALFA/[1 + BETA*z(i)] - x(i)],



z(1)   = x(N)^GAMA   + x(N-1)^GAMA +...+ x(N-K+3)^GAMA + x(N-K+2)^GAMA
z(2)   = x(1)^GAMA   + x(N)^GAMA   +...+ x(N-K+4)^GAMA + x(N-K+3)^GAMA
......................................................................
z(N-1) = x(N-1)^GAMA + x(N-2)^GAMA +...+ x(N-K+2)^GAMA + x(N-K+1)^GAMA

*** :  x(i) = x0(i)  t = 0 

