1. A validation study of the Del Mar Avionics ambulatory blood pressure system;Harshfield;Ambulatory Electrocardiography,1979
2. Diagnostic use of ambulatory blood pressure monitoring in medical practice;McCall;J Fam Pract,1981
3. The 24 hour ambulatory blood pressure profile with verapamil;Gould;Circulation,1982
4. The antihypertensive effect of verapamil in twice and thrice daily dose regimens. A randomized, double-blind, cross-over trial;Hedbäck;J Int Med Res,1983
5. Blood Pressurometer Data Analysis System Model 1981 Product Information. Del Mar Avionics, Irvine, Carlifornia, USA