
lbou_sf(1):= - p*v_x + p_t - p_x*v - q*u_x - q_3x*sig - q_x*u$

lbou_sf(2):= - p_x - q*v_x + q_t - q_x*v$

lbou_star_sf(1):= - p_t + p_x*v + q_x$

lbou_star_sf(2):=p_3x*sig + p_x*u - q_t + q_x*v$

;end;$
