Letter from the editors Renato BettiAngelo GuerraggioSettimo Termini EditorialNotes 11 January 2018 Pages: 267 - 268
Matter built, excavated, split: a journey through fractal cities Sandra Lucente OriginalPaper 23 November 2017 Pages: 279 - 286
Image-matching technology applied to Fifteenth-century printed book illustration Matilde MalaspinaYujie Zhong OriginalPaper Open access 20 December 2017 Pages: 287 - 292
The twin prime conjecture and other curiosities regarding prime numbers Renato Betti OriginalPaper 28 November 2017 Pages: 297 - 303
The paradox of Vito Volterra’s predator-prey model Jean-Marc Ginoux OriginalPaper 27 November 2017 Pages: 305 - 311
A new algorithm for the rating of orienteering athletes: the OriELO system (OE) Tullio Aebischer OriginalPaper 24 November 2017 Pages: 313 - 321
Book review of La corrispondenza massonica di Luigi Cremona con Giosuè Carducci e Francesco Magni, edited by Aldo Brigaglia and Simonetta Di Sieno Pietro Nastasi OriginalPaper 06 January 2018 Pages: 323 - 325