@ARTICLE{10.21494/ISTE.OP.2021.0663, 

TITLE={Leonardo da Vinci and the drawing of elliptical shapes}, 
  
AUTHOR={Jean-Pierre Crettez, }, 
	
JOURNAL={Art and Science}, 
	
VOLUME={5}, 

NUMBER={Issue 2</br>}, 
	
YEAR={2021}, 

URL={https://www.openscience.fr/Leonardo-da-Vinci-and-the-drawing-of-elliptical-shapes}, 
	
DOI={10.21494/ISTE.OP.2021.0663}, 
	
ISSN={2515-8767}, 
	
ABSTRACT={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.}}