no. 1-4
On drawings composed of uniform straight lines
Journal de Mathématiques Pures et Appliquées, Série 9, Tome 19 (1940) no. 1-4, pp. 221-236. 
@article{JMPA_1940_9_19_1-4_221_0,
     author = {Birkhoff, George D.},
     title = {On drawings composed of uniform straight lines},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {221--236},
     publisher = {Gauthier-Villars},
     volume = {Ser. 9, 19},
     number = {1-4},
     year = {1940},
     zbl = {0024.28501},
     language = {en},
     url = {http://archive.numdam.org/item/JMPA_1940_9_19_1-4_221_0/}
}
TY  - JOUR
AU  - Birkhoff, George D.
TI  - On drawings composed of uniform straight lines
JO  - Journal de Mathématiques Pures et Appliquées
PY  - 1940
SP  - 221
EP  - 236
VL  - 19
IS  - 1-4
PB  - Gauthier-Villars
UR  - http://archive.numdam.org/item/JMPA_1940_9_19_1-4_221_0/
LA  - en
ID  - JMPA_1940_9_19_1-4_221_0
ER  - 
%0 Journal Article
%A Birkhoff, George D.
%T On drawings composed of uniform straight lines
%J Journal de Mathématiques Pures et Appliquées
%D 1940
%P 221-236
%V 19
%N 1-4
%I Gauthier-Villars
%U http://archive.numdam.org/item/JMPA_1940_9_19_1-4_221_0/
%G en
%F JMPA_1940_9_19_1-4_221_0
Birkhoff, George D. On drawings composed of uniform straight lines. Journal de Mathématiques Pures et Appliquées, Série 9, Tome 19 (1940) no. 1-4, pp. 221-236. http://archive.numdam.org/item/JMPA_1940_9_19_1-4_221_0/