1. Bertoin, J.: Lévy Processes. Cambridge Tracts in Mathematics, Cambridge (1996)
2. Dvoretzky, A., Erdös, P., Kakutani, S.: Double points of paths of Brownian motion in $$n$$-space. Acta Sci. Math. 12, 75–81 (1950)
3. Dvoretzky, A., Erdös, P., Kakutani, S.: Multiple points of paths of Brownian motion in the plane. Bull. Res. Counc. Israel Sect. F 3, 364–371 (1954)
4. Dvoretzky, A., Erdös, P., Kakutani, S., Taylor, S.J.: Triple points of Brownian motion in 3-space. Proc. Camb. Philos. Soc. 53, 856–862 (1957)
5. Evans, S.N.: Multiple points in the sample paths of a Lévy process. Probab. Theory Relat. Fields 76, 359–367 (1987)