https://www.pinterest.com/pin/209135976422692071/

https://www.pinterest.com/pin/567946202980106017/

https://s-media-cache-ak0.pinimg.com/736x/c5/31/34/c53134d4091375cace2c790c3523fa25.jpg

http://2.bp.blogspot.com/-ahZp1f0fxK0/UB0BCFkf72I/AAAAAAAACMA/tqwErWoQp5g/s1600/Boull%C3%A9e_-_Projet_d'Op%C3%A9ra_-_%C3%A9l%C3%A9vation,+1781.jpg

http://es.wikipedia.org/wiki/%C3%89tienne-Louis_Boull%C3%A9e

http://es.wikipedia.org/wiki/%C3%89tienne-Louis_Boull%C3%A9e

http://www.epdlp.com/arquitecto.php?id=4567

http://mini-site.louvre.fr/saison18e/en/le_louvre_au_temps_des_lumieres/tl03.html

http://www.epdlp.com/arquitecto.php?id=4567

http://www.epdlp.com/arquitecto.php?id=4567

Dibujos de Boullée