بررسی ترکیبات ازت‌دار سمی در گون‌های کرک ساده ایران

Cronin, E. H., M. C. Williams, & J. D. Olsen 1981: Toxicity & control of kelsey milk vetch. -J. Range Manage. 34: 181-183.

James, L. F., W. J. Hartley, M. C. Williams, & K. R. von Kampen 1980: Field and experimental studies in cattle & sheep poisoned by nitro-bearing Astragalus or their toxins. -Am. J. Vet. Res. 41: 377-382.

Stermitz, F. R, F. A. Norris & M. C. Williams 1969: Miserotoxin, a new naturally occuring nitro compound. -J. Am. Chern. Soci. 91: 4599-4600.

Williams, M. C. 1981: Nitro compounds in foreign species of Astragalus weed. -Sci. 29: 261-269.

- 1982: 3-Nitropropionic acid and 3-nitro-l-propanol in species of Astragalus. -Can. J. Bot. 60: 1956-1963.

 - 1983: Toxic Nitro Compounds in Lotus. -Agronomy Journal, 75: 520-522.

- & R. C. Barneby 1977: The occurrence of nitro-toxins in North American Astragalus (Fabaceae). -Brittonia, 29: 310-326.

- & L. F. James 1975: Toxicity of nitro-containing Astragalus to sheep and chicks. -J. Range. Manage., 28: 260-263.

- - & A. T. Bleak. 1976: Toxicity of introduced nitro-containing Astragalus to sheep, cattle, and chicks. -J. Range Manage. 29: 30-33.

- F. A. Norris & K. R. Kampen 1970: Metabolism of miserotoxin to 3-nitro-l-propanol in bovine & ovine ruminal fluids. -Am. J. Vet. Res. 31: 259-262.

- & R. Parker 1974: Distribution of organic nitrites in Astragalus. -Weed. Sci. 22: 259-262.