@article{MS2_1972__31_166273,
     author = {H. Simmons},
     title = {A {Possible} {Characterization} of {Generic} {Structures.}},
     journal = {Mathematica Scandinavica},
     pages = {257--261},
     publisher = {mathdoc},
     volume = {31},
     year = {1972},
     zbl = {0262.02052},
     url = {http://geodesic.mathdoc.fr/item/MS2_1972__31_166273/}
}