Magnusson, CGM., & Masson, PL. (1985). Immunoglobulin-e Assayed After Pepsin Digestion By An Automated and Highly Sensitive Particle Counting Immunoassay - Application To Human Cord Blood. Journal of Allergy and Clinical Immunology, 75(4), 513-524. https://doi.org/10.1016/S0091-6749(85)80026-9 (Original work published 1985)