R. Illner et G. Rein, TIME DECAY OF THE SOLUTIONS OF THE VLASOV-POISSON SYSTEM IN THE PLASMA PHYSICAL CASE, Mathematical methods in the applied sciences, 19(17), 1996, pp. 1409-1413
We introduce a new identity satisfied by solutions of the Vlasov-Poiss
on system. It has the property that all quantities which appear have a
definite sign, and this allows us to prove new results on the time de
cay of the solutions in the plasma physical case.