@article{CM_1938__5__177_0,
     author = {Rothe, Erich},
     title = {Zur Theorie der topologischen Ordnung und der Vektorfelder in Banachschen R\"aumen},
     journal = {Compositio Mathematica},
     publisher = {Johnson Reprint Corporation},
     volume = {5},
     year = {1938},
     pages = {177-197},
     zbl = {0018.13304},
     language = {de},
     url = {http://www.numdam.org/item/CM_1938__5__177_0}
}

Rothe, Erich. Zur Theorie der topologischen Ordnung und der Vektorfelder in Banachschen Räumen. Compositio Mathematica, Volume 5 (1938) , pp. 177-197. http://www.numdam.org/item/CM_1938__5__177_0/