Volume 70, No. 1 (2013)
Portugaliae Mathematica
pp. 1–10 Outerplanarity without accumulation in the cylinder and the Möbius BandLuis BozaEugenio M. FedrianiJuan Núñez
pp. 11–22 Another approach on an elliptic equation of Kirchhoff typeAnderson L.A. de Araujo
pp. 23–50 Convergence of a finite difference method for the KdV and modified KdV equations with dataPaulo AmorimMário Figueira
pp. 51–58 When every principal ideal is flatFatima CheniourNajib Mahdou
pp. 59–91 Tropical Severi varietiesJihyeon Jessie Yang