Monument of Dexilaus. Depiction of an Athenian cavalryman killing an hoplite at a 394 BC engagement near Corinth during the Corinthian War.
Oman, Charles William Chadwick, Sir, 1860-1946
<a rel="nofollow" class="external text" href="https://archive.org/details/historyofgreec00oman/page/190">A history of Greece from the earliest times to the death of Alexander the Great</a>, published 1905