If you have a set of Jeppesens, take a look at the ATC section of the text manual. Here you will find details, taken from the respective state’s AIP, of the areas in which each state is non-ICAO (PANS-OPS) compliant. Under Greece you will see that the state has declared that its circling procedures are calculated in accordance with TERPS criteria. There is even a helpful diagram detailing the 1.7/2.3nm defined areas.
OK -- found a reference in the Greece ATC pages,
"For instrument approach procedures showing OCLs circling criteria are based on United States Standards for Terminal Procedures (TERPS)" [emphasis mine]
But also, in the Introduction pages (p-115a), Jeppesen states that,
"Different design standards may be applied for the approach procedure than for the circling areas. In those exceptional cases, an additional label in the heading of the circling minimums box will indicate the criteria which have been applied for the construction of the circling area."
The page goes on to provide an example of a circling minimums box with (TERPS) in parentheses and the maximum TERPS maneuvering speeds 90-120-140-165.
A cursory inspection of a number of current Jeppesen charts for airports in Greece (e.g., LGIO, LGKO) reveals no special circling minima box -- are you saying that those airports should have the special box noted above?