1. Studying zooplankton populations with an electronic zooplankton counting device and the LINC-8 computer;Boyd,1969
2. The undulating oceanographic recorder—a new instrument system for sampling plankton and recording physical variables in the emphotic zone from a ship underway;Bruce;Marine Biology,1975
3. High speed automatic blood cell counter and cell size analyzer;Coulter,1957
4. The continuous plankton recorder;Hardy;Discovery Report,1936
5. Ecological investigations with the continuous plankton recorder: object, plans and methods;Hardy;Hull Bulletin of Marine Ecology,1939