@article{10_4064_cm_78_1_93_96,
     author = {A. Schinzel},
     title = {A property of the unitary convolution},
     journal = {Colloquium Mathematicum},
     pages = {93--96},
     publisher = {mathdoc},
     volume = {78},
     number = {1},
     year = {1998},
     doi = {10.4064/cm-78-1-93-96},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-78-1-93-96/}
}