Domino Waves. - Costas J. Efthimiou; Michael D. Johnson 004 (SIAM Rev., 2007)

A Class of Periodic Continued Radicals. - Costas J. Efthimiou (Am. Math. Mon., 2012)

A Class of Continued Radicals. - Costas J. Efthimiou (Am. Math. Mon., 2013)

A physics-driven study of dominance space in soccer. - Costas J. Efthimiou; Gregory DeCamillis; Indranil Ghosh (CoRR, 2022)

The Voronoi Diagram in Soccer Revisited. - Costas J. Efthimiou (FICC (1), 2023)