McArthur 1993: toponym, probably Aptara based on non-contradicting geographic evidence of place-name equation
Palmer 1979, Chadwick & Ventris 1973: toponym, cf. Ἀπταρα (identified by Pashley 1837 as a site in eastern Crete at Palaiokastro)
Hart 1965: Aptara in northwest Crete
Parallel Sign Groups
Chadwick, John and Michael Ventris, 1973 Documents in Mycenaean Greek
Hart, G.R., 1965 Mnemosyne 18 “The Grouping of Place-Names in the Knossos Tablets”
McArthur, Jennifer, 1993 Suplementos a MINOS núm. 9 "Place-Names in the Knossos Tablets Identification and Location"
Palmer, Leonard R., 1979 Colloquium Mycenaeum "Context and Geography I: Crete"
Pashley, Robert, 1837 Travels in Crete