On k-path hamiltonian graphs and line-graphs
Rendiconti del Seminario Matematico della Università di Padova, Tome 46 (1971), pp. 385-389. 
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     author = {Zamfirescu, Tudor},
     title = {On $k$-path hamiltonian graphs and line-graphs},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {385--389},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {46},
     year = {1971},
     zbl = {0233.05122},
     mrnumber = {319813},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1971__46__385_0/}
}
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Zamfirescu, Tudor. On $k$-path hamiltonian graphs and line-graphs. Rendiconti del Seminario Matematico della Università di Padova, Tome 46 (1971), pp. 385-389. http://www.numdam.org/item/RSMUP_1971__46__385_0/

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