Actas del... Congreso"Dr. Antonio A.R. Monteiro"
Antonio A. R. Monteiro
... a forced pendulum in the presence of friction. Proc. of Am.Math.Soc. Vol. 128, 9 ¡2000), 2659-2665. [11] Ortega R., Tarallo M.: Degenerate equations of pendulum-type. Comm. in Contemporary Math. Vol. 2, 2 (2000), 127-149. Pablo Amster ...