Simon Pena
        Conjugacy  criteria for half-linear
            differential  equations
        p. 1-11:
Abstract,
Postscript   ( 109 K)
      Jerzy Popenda and Ewa Schmeidel
        On the Asymptotically Periodic Solution of Some
            Linear Difference Equations
        p. 13-19:
Abstract,
Postscript   ( 80 K)
      C. Alsina, P. Cruells, M. S. Tomas
        Characterizations of inner product
            spaces through an isosceles trapezoid property
        p. 21-27:
Abstract,
Postscript   ( 400 K)
     M. M. Cavalcanti
       Exact controllability of the wave equation
           with mixed boundary condition and
           time-dependent coefficients
        p. 29-57:
Abstract,
Postscript   ( 262 K)
      Katarzyna Konieczna, Pawel Urbanski
        Double vector bundles and duality
        p. 59-95:
Abstract,
Postscript   ( 296 K)