1. A letter from the editors

   • Hans Havlicek
   • Alexander Kreuzer

   News 17 October 2013 Pages: 399 - 399

2. Werner Heise (1944–2013)

   • Thomas Honold
   • Hans-Joachim Kroll
   • Kay Sörensen

   EditorialNotes 21 November 2013 Pages: 401 - 407

3. On the minimum size of complete arcs and minimal saturating sets in projective planes

   • Daniele Bartoli
   • Giorgio Faina
   • Fernanda Pambianco

   OriginalPaper 11 September 2013 Pages: 409 - 419

4. An interstice relationship for flowers with four petals

   • Steve Butler
   • Ron Graham
   • Colin Mallows

   OriginalPaper 31 August 2013 Pages: 421 - 438

5. A note on distinct distance subsets

   • Marcos Charalambides

   OriginalPaper 01 September 2013 Pages: 439 - 442

6. Transversal wave maps and transversal exponential wave maps

   • Yuan-Jen Chiang
   • Robert A. Wolak

   OriginalPaper 17 October 2013 Pages: 443 - 459

7. Intersection area of a stationary circle and a circle under a coupled axial rotation and translation

   • Hylke J. Glass

   OriginalPaper 18 October 2013 Pages: 461 - 467

8. Non-classical polar unitals in finite Dickson semifield planes

   • Alice M. W. Hui
   • Hiu Fai Law
   • Philip P. W. Wong

   OriginalPaper Open access 06 September 2013 Pages: 469 - 493

9. Rakić duality principle in the almost Hermitian geometry

   • Maria Ivanova
   • Vesselin Videv
   • Zhivko Zhelev

   OriginalPaper 12 July 2013 Pages: 495 - 504

10. Stability for the Minkowski measure of convex domains of constant width

    • HaiLin Jin
    • GangSong Leng
    • Qi Guo

    OriginalPaper 01 September 2013 Pages: 505 - 513

11. Ruler and regular polygon constructions

    • Marius Munteanu
    • Laura Munteanu

    OriginalPaper 17 October 2013 Pages: 515 - 537

12. Radical transversal lightlike hypersurfaces of almost complex manifolds with Norden metric

    • Galia Nakova

    OriginalPaper 13 September 2013 Pages: 539 - 556

13. On sets of type (q + 1, n)₂ in finite three-dimensional projective spaces

    • Vito Napolitano

    OriginalPaper 11 September 2013 Pages: 557 - 562

14. A common characterization of the projective spaces PG(4, n) and PG(5, n)

    • Vito Napolitano
    • Domenico Olanda

    OriginalPaper 01 October 2013 Pages: 563 - 569

15. Curvature properties of normal almost contact manifolds with B-metric

    • Marta Teofilova

    OriginalPaper 12 July 2013 Pages: 571 - 584

16. Notes on Schneider’s stability estimates for convex sets

    • Gabor Toth

    OriginalPaper 06 September 2013 Pages: 585 - 598