@article{MZ_1927__26_167929,
     author = {W. L. Ferrar},
     title = {Note on {Monotonic} {Sequences}},
     journal = {Mathematische Zeitschrift},
     pages = {365--372},
     publisher = {mathdoc},
     volume = {26},
     year = {1927},
     zbl = {53.0184.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1927__26_167929/}
}