Magnusson, CGM., & Masson, PL. (1985). A Reappraisal of Ige Levels in Various Human Secretions By Particle Counting Immunoassay Combined With Pepsin Digestion. International Archives of Allergy and Applied Immunology, 77(3), 292-299. https://doi.org/10.1159/000233834 (Original work published 1985)