Kendo T, Takeo K, Minamizawa H, Sugata K, Kuzuba M.
Kango Kyoiku. 1988 Jul;29(7):390-407.
PMID: 3419003

Nakano C, Tada N, Miyake T, Kawabata Y, Ugiie S.
Kango Kenkyu. 1978;11(1):29-41.
PMID: 245413

Sato Y, Miwa T, Tomita I, Yanagihashi S, Hiroshige M.
Kango Kyoiku. 1980 Feb;21(2):86-97.
PMID: 6898698

[No authors listed]
Kango Kenkyu. 1973;6(1):56-63.
PMID: 4543793

Maeda K, Shirai K, Watarai N, Ueda C, Kusuda M.
Kango Kenkyu. 1986;19(4):393-402.
PMID: 3642014

Ota S, Sekine K, Terashima T, Tajima K, Iida S.
Kango Kenkyu. 1985;18(2):226-39.
PMID: 3849612

Ogushi Y, Genda K, Hagisawa S, Maehara S.
Kango Kenkyu. 1981;14(1):28-40.
PMID: 6908621