Shouldn't be the result ed. by Σαββίδης Γ. Π. instead of ed. by Γ. Π. Σαββίδης? <name and="text" delimiter=", "/> has no form attribute, so the default value "long" will be used. The order for non-latin/Cyrillic names with form set to "long" is
which would result in Σαββίδης Γ. Π.