@article{ITA_1997__31_5_429_0,
     author = {Basagni, S. and Bruschi, D. and Ravasio, F.},
     title = {On the difficulty of finding walks of length k},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {429--435},
     publisher = {EDP-Sciences},
     volume = {31},
     number = {5},
     year = {1997},
     mrnumber = {1611647},
     zbl = {0893.68072},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1997__31_5_429_0/}
}