TY  - RPRT
TI  - Ontogenetic changes in pacemaker activity in chick heart.
AU  - K Löffelholz
AU  - A J Pappano
PY  - 1974
DO  - 10.1016/0024-3205(74)90277-x
UR  - https://pubmed.ncbi.nlm.nih.gov/4407740/
ID  - 4407740
ER  -