[290].Anthony Blunt, Artistic Theory in Italy, 1450——1600 (Oxford, 1962), p.22.
[291].Leon Battista Alberti, On Painting, trans. C.Grayson (London, 1991), p.35.
[292].Kenneth Clark, ‘Leon Battista Alberti on Painting’, Annual Italian lecture of the British Academy (1944), in Proceedings of the British Academy, vol. XXX (London, 1945), pp.185——200.
[293].Alberti, On Painting, p.155.
[294].Michael Vickers, ‘Some preparatory drawings for Pisanello’s medallion of John VIII Palaeologus’, The Art Bulletin, vol. 60, no. 3, September 1978, pp.417——424.