@article{MAN_1935__110_159718,
     author = {K. Sch\"utte},
     title = {\"Uber die {Erf\"ullbarkeit} einer {Klasse} von logischen {Formeln}},
     journal = {Mathematische Annalen},
     pages = {161--194},
     publisher = {mathdoc},
     volume = {110},
     year = {1935},
     zbl = {0009.33704},
     url = {http://geodesic.mathdoc.fr/item/MAN_1935__110_159718/}
}