TY - BOOK AU - Fox,Charles TI - An introduction to the calculus of variations / PY - 1963/// CY - London PB - Oxford University Press, KW - CALCULO DE VARIACIONES KW - VARIATION KW - HAMILTON'S PRINCIPLE KW - ISOPERIMETRICAL PROBLEMS KW - HILBERT'S INTEGRAL KW - STROG VARIATIONS KW - WEIERSTRASSIAN E FUNCTION ER -