Visibility in crowds of translates of a centrally symmetric convex body. - Javier Alonso 004; Horst Martini; Margarita Spirova (Eur. J. Comb., 2010)

Minimal enclosing discs, circumcircles, and circumcenters in normed planes (Part I). - Javier Alonso 004; Horst Martini; Margarita Spirova (Comput. Geom., 2012)

Minimal enclosing discs, circumcircles, and circumcenters in normed planes (Part II). - Javier Alonso 004; Horst Martini; Margarita Spirova (Comput. Geom., 2012)