Não informado. Reports of the Research Institute for Strength and Fracture of Materials. Tohoku University.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Reports of the Research Institute for Strength and Fracture of Materials. Sendai, Japão: Tohoku University.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Reports of the Research Institute for Strength and Fracture of Materials. Tohoku University.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.