begin name
zatorskye
end name

begin reactions
R1 {1.0}$EXTERNAL = {1.0}x
R2 {1.0}x = {1.0}$EXTERNAL
R3 {1.0}x = {1.0}$EXTERNAL
R4 {1.0}$EXTERNAL = {1.0}y0
R5 {1.0}y0 = {1.0}y
R6 {1.0}y = {1.0}$EXTERNAL
end reactions

begin rate equations
R1 = betax*compartment*psi
R2 = alphax*compartment*x[t]
R3 = alphaxy*compartment*x[t]*y[t]
R4 = betay*compartment*psi*x[t]
R5 = alpha0*compartment*y0[t]
R6 = alphay*compartment*y[t]
end rate equations

begin parameters
alpha0 = 0.1
alphax = 0.0
alphaxy = 3.2
alphay = 0.1
betax = 0.3
betay = 0.4
psi = 1.0
compartment = 1.0
end parameters

begin initial conditions
x[0] = xi
y[0] = yi
y0[0] = y0i
end initial conditions

begin initial values
xi = 0.0
yi = 0.0
y0i = 0.0
end initial values

begin assignment rules
end assignment rules

begin function definitions
end function definitions

begin events
end events

begin process annotations
end process annotations

begin species annotations
end species annotations

begin units
end units