1. C. L. Foster, Treatise of Ore and Stone Mining, 6th ed. Charles Griffin and Co. (1905).
2. D. B. Barker, W. L. Fourney, and J. W. Dally, “Fracture control in tunnel blasting,” Transportation Research Record, No. 684 (1978).
3. U. Langefors and B. Kihlström, The Modern Technique of Rock Blasting, Wiley (1963).
4. N. G. Dubynin, Sh. G. Volodarskaya, N. B. Yanovskaya, and B. G. Yanovskii, “Study of the effect of blasthole shape on the efficiency of exploding blathole charges,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 6 (1974).
5. Patent No. 4018293 (USA), Method for Regulating Crack Formation.