@article{10_4064_sm_44_1_71_85,
     author = {P. Ney and S. Wainger},
     title = {The renewal theorem for random walk in two-dimensional time},
     journal = {Studia Mathematica},
     pages = {71--85},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {1972},
     doi = {10.4064/sm-44-1-71-85},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-44-1-71-85/}
}