TY  - RPRT
TI  - Demand pacing, preferably with threshold control.
AU  - J van den Berg
AU  - H J Thalen
PY  - 1969
DO  - 10.1111/j.1749-6632.1969.tb34150.x
UR  - https://pubmed.ncbi.nlm.nih.gov/5263826/
ID  - 5263826
ER  -