by Robbins, R.K., Sullivan, J.J., Pace, M.M., Elliott, F.I., Bartlett, D.E., Press, P.J., W. R. Grace & Co
Published in Theriogenology (01.01.1978)

by P.J. DICKERSCHEID Associated Press
Published in Abilene reporter-news (28.07.2011)

by P.J. DICKERSCHEID Associated Press
Published in Abilene reporter-news (26.07.2011)

by P.J. Dickerscheid Associated Press
Published in Deseret news (Salt Lake City, Utah : 1964) (25.08.2009)

by P.J. Dickerscheid Associated Press
Published in Deseret news (Salt Lake City, Utah : 1964) (08.12.2008)

by P.J. Dickerscheid The Associated Press
Published in Daily press (Newport News, Va. : Final ed.) (10.04.2009)

by P.J. HUFFSTUTTER, The Associated Press contributed to this report
Published in Milwaukee journal sentinel (11.02.1999)