HYDROGEN ADSORPTION ON NICKEL-SILVER FILMS Article KUZHEL L.M., MIKHALENKO I.I., YAGODOVSKII V.D. ZHURNAL FIZICHESKOI KHIMII / Russian Journal of Physical Chemistry A. MEZHDUNARODNAYA KNIGA / Федеральное государственное бюджетное учреждение "Российская академия наук". Vol. 65. 1991. P. 837-839
PERIODIC-SOLUTIONS OF SINGULARLY PERTURBED LINEAR-SYSTEMS WITH SINGULARITIES Article ROZHKOV V.I. Differential Equations. Vol. 27. 1991. P. 136-141