[MathOuvrage]
One-dimensional variational problems
/ Buttazzo, Giuseppe ; Giaquinta, Mariano ; Hildebrandt, Stefan.
-Oxford : Clarendon Press, 1998. - viii, 262 p. ; 24 cm
[MathOuvrage]
Applied analysis
/ Hunter, John K. ; Nachtergaele, Bruno.
-London, River Edge NJ, Singapore : World Scientific, 2001. - xii, 439 p. ; 26 cm