Volume 11 (4) (1991)

• Brahim Benouahmane
  Approximants de Padé ''Homogènes'' et Polynômes Orthogonaux à Deux Variables
  673-689
• M.K. Aouf, S. Owa, M. Obradović
  Certain Classes of Analytic Functions of Complex Order and Type Beta
  691-714
• Manuel de León, Paulo R. Rodrigues
  Second-order Differential Equations and Degenerate Lagrangians
  715-728
• Hui-Zhong Cao
  On a Conjecture of Multiplicative Partitions
  729-735
• Maria Francesca Betta, Anna Mercaldo
  Existence and Regularity Results for a Nonlinear Elliptic Equation
  737-759
• A.K. Mahato, K.M. Saksena
  Some Results for a Generalised Integral Transform
  761-775
• Stefano Capparelli
  The Jordan Canonical Form in some θ-groups
  777-808
• Manlio Bordoni
  Stima dello Spettro di un Rivestimento Riemanniano Tramite lo Spettro della Base
  809-818
• A. Maitra, R. Purves, W. Sudderth
  A Capacitability Theorem in Finitely Additive Gambling
  819-842
• Domenico Lenzi
  Some Remarks on Transitive Collineation Groups of Finite Projective Planes
  843-847
• A. Cabras, D. Canarutto
  The System of Principal Connections
  849-871
• Wenchang Chu
  Dominance Method for Plane Partitions: Skew Plane Partitions and Skew Tableaux
  873-881
• Vittoria Demichelis
  Interpolation by Piecewise Weighted Mean Functions
  883-891
• Laura Gori
  On a Quadrature Process of Birkhoff Type
  893-903
• Harold Exton
  The Doubly Confluent Heun Equation: A Differential Equation Associated with the Naked Singularity in Cosmology
  905-911
• Vincenzo Dicuonzo, Dario Pasquali Coluzzi
  On the Automorphism Group of a Class of Finite Inversive Spaces of Odd Order
  913-923
• P. Amato
  Schauder's Fixed Point Theorem Using a Caccioppoli Theorem
  925-929
• Bohumil Cenkl , G. Hector, M. Saralegi
  Tame Intersection Cohomology
  931-944