Media type: E-Article Title: The work of fracture in crystals of sodium chloride containing cavities Contributor: Forwood, C. T. Published: Informa UK Limited, 1968 Published in: The Philosophical Magazine: A Journal of Theoretical Experimental and Applied Physics, 17 (1968) 148, Seite 657-667 Language: English DOI: 10.1080/14786436808223019 ISSN: 0031-8086 Origination: Footnote: