Edition of both romance and riddles by Isidor Hilberg (1876), who fixes the date of Eustathius between 850 and 988, with critical apparatus and prolegomena, including the solutions;
Isidor Gunsberg | Raul Hilberg | Isidor Neumann | Isidor Philipp | Isidor Straus | Isidor N. Kahn | Isidor Hilberg | Isidor Bush | Isidor Achron |