12. Bard P. Control of systemic blood vessels, Chapter 10 In Medical Physiology, Ed. 12, Vol. 1, edited by V. B. Mountcastle. С. V. Mosby Company, St Louis, 1968 (pp. 150–177, See 168–169).
13. Bardeen CR: The musculature, Sect. 5. In Moms's Human Anatomy, edited by C< M Jackson, Ed 6. Blakiston's Son & Co., Philadelphia, 1921 (p. 481, Fig 424).
14. Basmajian JV, Burke MD, Burnett GW, et al. (eds.). Stedmans Medical Dictionary, 24th ed. Williams & Wilkms, Baltimore, 1982 (pp 293, 1143).
15 Basmajian JV, Deluca CJ: Muscles Alive, Ed 5. Williams & Wilkins, Baltimore, 1985 (pp. 399–400).
16. Ibid.: (pp 402–403).
17. Benoit G, Ddmas V, Gtflot C, et al.- The anatomy of erection. Surg Radiol Anat 9:263–272, 1987.
18. Carter BL, Morehead J, Wolpert SM, et al.. Crass-Sectional Anatomy. Appleton-Century-Crofts, New York, 1977 (Sects. 38–41, 44–46.
19. Ibid. (Sects. 41–42—male, Sect. 47—female).
20. Ibid. (Sect 42).
21. Ibid. (Sects. 40–42, 46).
22. Ibid. (Sects. 40, 44).
23. Ibid. (Sects. 42, 47).
24. Clemente CD: Gray’s Anatomy of the Human Body, American Ed 30. Lea & Febiger, Philadelphia, 1985 (p. 96).
25. Ibid. (pp. 361–363).
26. Ibid. (pp. 498–500)
27. Ibid. (pp 500, 501, Fig 6-36).
28. Ibid. (pp. 508–511).
29. Ibid. (p 509, Fig. 6-40).
30. Ibid. (p. 510, Fig. 6-41)
31. Ibid. (pp. 511–512).
32. Ibid. (pp. 568–570).
33. Cooper WL: Coccygodynia: an analysis of one hundred cases J Internal Coll Surg 33:306-3U, 1960
34. Critchley HOD, Dixon JS, Gosling JA. Comparative study of the periurethral and perianal parts of the human levator am muscle Urol Int 35:226–212, 1980.
35. Dittrich RJ. Coccygodynia as referred pain. J Bone Joint Surg [Am] 33:715–718, 1951.
36. Douthwaite AH. Proctalgia fugax. Br Med J 2:164–165. 1962.
37. Eisler P. Die Muskeln des Stammes. Gustav Fischer, Jena, 1912 (pp. 447, 449–451, Fig. 65).
38. Fenner H, Staubesand J: Sobotta Atlas of Human Anatomy, Ed. 10, Vol. 2. Urban & Schwarzenberg, Baltimore, 1983 (Fig. 152).
39. Ibid. (Fig. 292).
40. Ibid. (Fig 295).
41. Ibid. (Figs, 320, 328, 329).
42. Ibid. (Fig. 325)
43. Ibid. (Fig. 404).
44. Ibid. (Fig 420)
45. Goldstein J Personal communication, 1990.
46. Gosling JA, Dixon JS, Critchley HOD, et al.: A comparative study of the human external sphincter and periurethral levator ani muscles. Br J Urol 53:35–41, 1981
47. Grant SR, Salvati EP, Rubin RJ: Levator syndrome' an analysis of 316 cases. Dis Colon Rectum 18:161–163, 1975.
48. Greenman PE Principles of Manual Medicine Williams & Wilkins, Baltimore, 1989 (pp. 234, 236).