@article{NUMA_1971__17_132057,
     author = {A.L. ROARK},
     title = {On the {Eigenproblem} for {Convolution} {Integral} {Equations.}},
     journal = {Numerische Mathematik},
     pages = {54--61},
     publisher = {mathdoc},
     volume = {17},
     year = {1971},
     zbl = {0207.17101},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1971__17_132057/}
}