Authors retain the copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution 4.0 International Public License (CC-BY-4.0) that allows others to share the work with an acknowledgment of the work's authorship and initial publication.
On the alleged invention of the catapult at Syracuse in 399 BC, refuting the theory of E. W. Marsden, Greek and Roman Artillery, I-II (Oxford 1969-71).
