Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 23 references without a DOI — listed, not checked
no DOI — not checkedAnderson, E. M., 1951, The dynamics of faulting and dyke formation with applications to Britain: Oliver and Boyd, Edinburgh and London, 206 p.
no DOI — not checkedBrace, W. F., 1964, Brittle fracture of rocks,in State of stress in the Earth's crust: Am. Elsevier Publ. Co., Inc., New York, p. 111–178.
no DOI — not checkedGriffith, A. A., 1924, Theory of rupture: Proc. First Intern. Cong. Applied Mechanics: Techniscke Backhandel Wattman, Delft., p. 55–63.
no DOI — not checkedInglis, C. E., 1913, Stresses in a plate due to the presence of cracks and sharp corners: Royal Inst. of Naval Architects Trans., v. 55 pt. 1, p. 219–230.
no DOI — not checkedIrwin, G. R., 1960, Fracture mechanics,in Structural mechanics—proceedings of first symposium of naval structural mechanics: Pergamon Press, New York, p. 557–592.
no DOI — not checkedJaeger, J. C., and Cook, N. G. W., 1969, Fundamentals of rock mechanics: Methuen and Co. Ltd., London, 513 p.
no DOI — not checkedKolosoff, G., 1914, Uber einige Eigenschaften des ebenen Problems der Elastizitatstheorie: Zeitschrift fur Math. und Physik, v. 62, p. 384–409.
no DOI — not checkedMcClain, W. C., 1968, Rock mechanics in the disposal of radioactive wastes by hydraulic fracturing: Felsmechanick und Ingenieurgeol., v. 6, p. 131–161.
no DOI — not checkedMcClintock, F. A., and Walsh, J. B., 1962, Friction of Griffith cracks under pressure: Proc. Fourth U.S. Cong. on Applied Mechanics, Am. Soc. Mechanical Eng., New York, p. 1015–1021.
no DOI — not checkedMuskhelishvili, N. I., 1963, Some basic problems of the mathematical theory of elasticity (4th ed.): P. Noordhoff, Ltd., Groningen, 718 p.
no DOI — not checkedNeuber, H., and Hahn, H. G., 1966, Stress concentration in scientific research and engineering: App. Mechanics Rev., v. 19, no. 3, p. 187–199.
no DOI — not checkedObert, L., Duvall, W. I., and Merrill, R., 1960, Design of underground openings in competent rocks: U.S. Bur. Mines, Bull. 587, 36 p.
no DOI — not checkedOde, H., 1956, A note concerning the mechanism of artificial and natural hydraulic fracturing systems: Colorado Sch. Mines Quart. v. 51, no. 1, p. 19–29.
no DOI — not checkedPollard, D. D., and Johnson, A. M., 1972, Mechanics of growth of laccolithic intrusions in the Henry Mountains, Utah: Tectonophysics, in press.
no DOI — not checkedRoberts, J. L., 1970, The intrusion of magma into brittle rocks,in Mechanism of igneous intrusion: Gallery Press, Liverpool, p. 287–338.
no DOI — not checkedSavin, G. N., 1961, Stress concentration around holes: Pergamon Press, New York, 430 p.
no DOI — not checkedSecor, D. T., 1969, Mechanics of natural extension fracturing at depth in the Earth's crust,in Proceedings, conference on research in tectonics (kink bands and brittle deformation): Geol. Survey of Canada, GSC Paper 68-52, p. 3–48.
no DOI — not checkedSneddon, I. N., 1946, The distribution of stress in the neighborhood of a crack in an elastic solid: Proc. Royal Soc. London, v. 187, ser. A, p. 229–260.
no DOI — not checkedSneddon, I. N., and Lowengrub, M., 1969, Crack problems in the classical theory of elasticity: John Wiley & Sons, Inc., New York, 221 p.
no DOI — not checkedStevenson, A. C., 1945, Complex potentials in two-dimensional elasticity: Proc. Royal Soc. London, v. 184, ser. A, p. 129–179.
no DOI — not checkedThomas, G. B., 1961, Calculus and analytic geometry: Addison-Wesley Publ. Co., Inc., Mass., 1010 p.
no DOI — not checkedTimoshenko, S., and Goodier, J. N., 1951, Theory of elasticity: McGraw-Hill Book Co., Inc., New York, 506 p.
no DOI — not checkedWestergaard, H. M., 1939, Bearing pressures and cracks: Am. Soc. Mechanical Eng., Trans., v. 61, p. A49-A53.
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