1. Ball & Brakke, Virology 36: 152, 1968.
2. Brakke & Ball, Phytopathology 58: 963, 1968.
3. Brakke & Van Pelt, Analyt. Biochem. 26: 242, 1968.
4. McKinney, Circ. U.S. Dep. Agric. 442, 23 pp., 1937.
5. McKinney, J. Wash. Acad. Sci. 34: 322, 1944.
6. McKinney, Pl. Dis. Reptr 40: 898, 1956.
7. McKinney, in Wheat and Wheat Improvement, ed. K. S. Quisenberry & L. P. Reitz, Am. Soc. of Agronomy, Madison, Wisconsin, USA., pp. 355-374, 1967.
8. McKinney, Silber & Greeley, Phytopathology 55: 1043, 1965.
9. Shepard & Carroll, J. Ultrastruct. Res. 21: 145, 1967.
10. Sill & Agusioba, Pl. Dis. Reptr 39: 633, 1953.
11. Sill & Conin, Trans. Kans. Acad. Sci. 56: 411, 1953.
12. Slykhuis, Phytopathology 45: 116, 1955.
13. Slykhuis, Rev. appl. Mycol. 46: 401, 1967.
14. Slykhuis & Bell, Can. J. Bot. 44: 1191, 1965.
15. Staples & Allington, Res. Bull. Neb. agric. Exp. Stn 178, 40 pp., 1956.