Marcu, Dănuţ. “On Finding the Elementary Paths of a Digraph”. Anal. Numér. Théor. Approx. 14, no. 2 (August 1, 1985): 117–121. Accessed April 29, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1985-vol14-no2-art3.