@article{SF_1970__1_133803,
     author = {B.M. Schein},
     title = {Automorphisms of polynomial semigroups.},
     journal = {Semigroup forum},
     pages = {279--281},
     publisher = {mathdoc},
     volume = {1},
     year = {1970},
     zbl = {0211.04103},
     url = {http://geodesic.mathdoc.fr/item/SF_1970__1_133803/}
}