@article{SF_1974__9_134065,
     author = {J.J. Hoehnke},
     title = {Existence of nontrivial stochastic monoids.},
     journal = {Semigroup forum},
     pages = {102--108},
     publisher = {mathdoc},
     volume = {9},
     year = {1974},
     zbl = {0303.18003},
     url = {http://geodesic.mathdoc.fr/item/SF_1974__9_134065/}
}