Lectures on the Calculus of Variations by Oscar Bolza - Dover S218 PB

Lectures on Calculus of Variations & Optimal Control – Hardcover 1969 L.C. Young

Lectures on the Calculus of Variations Paperback Bliss

Lectures on the Calculus of Variations (Classic Reprint)

Lectures on the Calculus of Variations (the Weierstrassian Theory)

Lectures on the Calculus of Variations: The Weierstrassian Theor

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Lectures on the Calculus of Variations by Oskar Bolza (1961 Dover paperback)