TY  - RPRT
TI  - [Intervertebral disk endoprosthesis--development and current status].
AU  - K Büttner-Janz
AU  - K Schellnack
PY  - 1990
UR  - https://pubmed.ncbi.nlm.nih.gov/2198019/
ID  - 2198019
ER  -