1. Enzyme histochemistry and differential white cell counts on the Technicon Hemalog D;Ansley,1971
2. The development of automated differential systems;Bacus,1978
3. The observer error in peripheral blood cell classification;Bacus;Am. J. Clin. Pathol.,1973
4. The unavoidable error in the differential count of the leukocytes of the blood;Barnett;J. Clin. Invest.,1933
5. College of American Pathologists Survey Program for 1972, Reference Laboratory Report, Comprehensive Hematology-Clinical Microscopy, Set H-A