Bibliographical references:
- Calvo-López, José (2011). ‘From Mediaeval Stonecutting to Projective Geometry’. Nexus Network Journal Vol. 13, no. 3 (503-533): 529-530.
- Gerbino, Anthony (2005). ‘François Blondel and the «Résolution des quatre principaux problèmes d’architecture» (1673) ’. Journal of the Society of Architectural Historians Vol. 64, no. 4: 498-521.
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