TY - RPRT TI - Structural similarities between viroids and transposable genetic elements. AU - M C Kiefer AU - R A Owens AU - T O Diener PY - 1983 DO - 10.1073/pnas.80.20.6234 UR - https://pubmed.ncbi.nlm.nih.gov/6312450/ ID - 6312450 ER -