@article{MAN_1975__216_162720,
     author = {Erik Ellentuck},
     title = {G\"odel's {Square} {Axioms} for the {Continuum.}},
     journal = {Mathematische Annalen},
     pages = {29--34},
     publisher = {mathdoc},
     volume = {216},
     year = {1975},
     zbl = {0289.02051},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__216_162720/}
}