1) Work by Xenophon 
Hipparchicus is the name usually given to Ἱππαρχικός, Hipparchikós, one of the two treatises on horsemanship by the Athenian historian and soldier Xenophon (c. 430 – 354 BC). Other common titles for this work include The cavalry commander and The cavalry general. The other work by Xenophon on horsemanship is Περὶ ἱππικῆ