@article{MS2_1974__34_166360,
     author = {Gunnar Forst},
     title = {Convolution {Semigroups} of {Local} {Type.}},
     journal = {Mathematica Scandinavica},
     pages = {211--218},
     publisher = {mathdoc},
     volume = {34},
     year = {1974},
     zbl = {0291.43005},
     url = {http://geodesic.mathdoc.fr/item/MS2_1974__34_166360/}
}