@article{10_4064_ap_22_3_351_358,
     author = {E. Gesztelyi},
     title = {On a generalization of the convolution},
     journal = {Annales Polonici Mathematici},
     pages = {351--358},
     publisher = {mathdoc},
     volume = {22},
     number = {3},
     year = {1969},
     doi = {10.4064/ap-22-3-351-358},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-22-3-351-358/}
}