@article{10_4064_am_19_2_169_180,
     author = {I. Kopoci\'nska and B. Kopoci\'nski},
     title = {On coincidences in renewal streams},
     journal = {Applicationes Mathematicae},
     pages = {169--180},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {1987},
     doi = {10.4064/am-19-2-169-180},
     zbl = {0631.60085},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-19-2-169-180/}
}