TY  - RPRT
TI  - External four-channel tocography during delivery.
AU  - L Spätling
AU  - F Fallenstein
AU  - R Danders
AU  - A Hasenburg
PY  - 1994
DO  - 10.1016/0020-7292(94)90408-1
UR  - https://pubmed.ncbi.nlm.nih.gov/7805998/
ID  - 7805998
ER  -