TY  - RPRT
TI  - Bar attachments for overdentures with nonparallel abutments.
AU  - D B Evans
AU  - R G Koeppen
PY  - 1992
DO  - 10.1016/0022-3913(92)90275-f
UR  - https://pubmed.ncbi.nlm.nih.gov/1403922/
ID  - 1403922
ER  -