@article{10_4064_cm_51_1_379_388,
     author = {K. Urbanik},
     title = {A numerical constant associated with generalized convolutions},
     journal = {Colloquium Mathematicum},
     pages = {379--388},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {1987},
     doi = {10.4064/cm-51-1-379-388},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-51-1-379-388/}
}