Duality in stable planes and related closure and kernel operations Holger Bickel OriginalPaper Pages: 8 - 15
On cyclic bra nched coverings of torus knots Alberto CavicchioliFriedrich HegenbarthAnn Chi Kim OriginalPaper Pages: 55 - 66
Embedding the planar structure of 4-dimensional linear spaces into projective spaces Paola De VitoEva Ferrara DenticeKlaus Metsch OriginalPaper Pages: 67 - 79
Two classes of conformally flat contact metric 3-manifolds Florence Gouli-AndreouPhilippos J. Xenos OriginalPaper Pages: 80 - 88
A time-like surface in Minkowski 3-space which contains light-like lines Shyuichi IzumiyaAkihiro Takiyama OriginalPaper Pages: 95 - 101
Some remarks on compact constant mean curvature hypersurfaces in a halfspace of ℍ n+1 Barbara NelliBeate Semmler OriginalPaper Pages: 128 - 140
Translation surfaces with constant mean curvature in 3-dimensional spaces Huili Liu OriginalPaper Pages: 141 - 149
On a characteristic property of minimal-ruled surfaces Abdülkadir özdeğer OriginalPaper Pages: 150 - 159