@article{10_4153_CJM_1982_034_3,
     author = {Cross, G. E.},
     title = {Additivity of the {Pn} {-Integral} (2)},
     journal = {Canadian journal of mathematics},
     pages = {506--512},
     year = {1982},
     volume = {34},
     number = {2},
     doi = {10.4153/CJM-1982-034-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1982-034-3/}
}