Volume 68, No. 2 (2011)
Portugaliae Mathematica
pp. 125–147 Fixed point theorems for 1-set weakly contractive and pseudocontractive operators on an unbounded domainAfif Ben AmarJesús Garcia-Falset
pp. 149–176 Linear motions in a periodically forced Kepler problemRafael Ortega
pp. 177–183 On the endomorphism monoid of a profinite semigroupBenjamin Steinberg
pp. 185–189 The Fibonacci version of the Brocard–Ramanujan Diophantine equationDiego Marques
pp. 191–203 Bi-Lipschitz equivalent metrics on groups, and a problem in additive number theoryMelvyn B. Nathanson
pp. 205–238 Uniform decay rates of coupled anisotropic elastodynamic/Maxwell equations with nonlinear dampingCleverson Roberto da LuzGustavo Alberto Perla Menzala