Lascelles Abercrombie, British poet and critic, in response to a serious challenge to a duel by Ezra Pound, suggested to his opponent that they " bombard each other with unsold copies of our own books."
Pound, having far more "weapons" than his opponent, immediately withdrew the challenge.

~ The LITTLE, BROWN BOOK OF Anecdotes, Clifton Radiman, Little, Brown and Company, 1985
(Note: Choice of weapons in a duel lies with the party challenged.)