AFEQ - Harter,D.H.; Schlom,J.; Burny,A.; Spiegelman,S. - Visna virus: a "slow" neurotropic agent with tumor virus properties. - Transactions of the American Neurological Association 1971; 96: 249-51
AKND - Schlom,J.; Harter,D.H.; Burny,A.; Spiegelman,S. - DNA polymerase activities in varions of visna virus, a causative agent of a "slow" neurological disease - Proceedings of the National Academy of Sciences of the United States of America 1971 Jan; 68(1): 182-6