Porteous, I. R. (1994). Geometric differentiation: For the intelligence of curves and surfaces. Cambridge, [England] New York, NY: Cambridge University Press.
Παραπομπή Chicago StylePorteous, Ian Robertson. Geometric Differentiation: For the Intelligence of Curves and Surfaces. Cambridge, [England] New York, NY: Cambridge University Press, 1994.
Παραπομπή MLAPorteous, Ian Robertson. Geometric Differentiation: For the Intelligence of Curves and Surfaces. Cambridge, [England] New York, NY: Cambridge University Press, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.