Authors(s)	Simpson, G.R., Patience, C., Loewer, R., Toenjes, R.R, Moore, H.D.M., Weiss, R.A. and Boyd, M.T.
Year	1996
Title	Endogenous D-type (HERV-K) related sequences are packaged into retroviral particles in the placenta and possess open reading frames for reverse transcriptase. Virology 222: 451-456.