"A test of the law of effective stress for crystalline rocks of low porosity"@en . . "1968-09-01T00:00:00Z"^^ . "A test of the law of effective stress for crystalline rocks of low porosity"@en . "R.J. Martin" . "415-426" . "1968IJRMA...5..415B" . . "A test of the law of effective stress for crystalline rocks of low porosity"@en . . "scholarly article"@en . "5" . . . . "A test of the law of effective stress for crystalline rocks of low porosity"@en . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F"@uk . . . . . . . . "10.1016/0148-9062(68)90045-4" . . "5" . .