@article{10_4153_CJM_1970_003_9,
     author = {Biondi, E. and Divieti, L. and Guardabassi, G.},
     title = {Counting {Paths,} {Circuits,} {Chains,} and {Cycles} in {Graphs:} a {Unified} {Approach}},
     journal = {Canadian journal of mathematics},
     pages = {22--35},
     year = {1970},
     volume = {22},
     number = {1},
     doi = {10.4153/CJM-1970-003-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-003-9/}
}