TY  - Type of reference 
TI  - Leonardo da Vinci and the drawing of elliptical shapes 
AU  - Jean-Pierre Crettez 
AB  - Leonardo da Vinci left us, in the folios of the Atlanticus Codex, three drawings proposing methods of construction of elliptical shapes. Analysis of these drawings shows that these methods are geometrically correct and that they have become increasingly effective. 
DO  - 10.21494/ISTE.OP.2021.0663 
JF  - Art and Science 
KW  - conical compass,  internal construction,  elliptical shape,  eccentricity,  first shape,  internal geometry, 
square mesh,  harmonic mesh, compas à coniques,  construction interne,  forme elliptique,  excentricité,  forme première,  géométrie
interne,  maillage carré,  maillage harmonique,  
L1  - https://www.openscience.fr/IMG/pdf/iste_artsci21v5n2_2.pdf 
LA  - en 
PB  - ISTE OpenScience 
DA  - 2021/05/13 
SN  - 2515-8767 
TT  - Léonard de Vinci et le tracé des formes elliptiques 
UR  - https://www.openscience.fr/Leonardo-da-Vinci-and-the-drawing-of-elliptical-shapes 
IS  - Issue 2</br> 
VL  - 5 
ER  -