A Four-Wavelength Flow-Through Fluorescence–Scatterometric Sensor That Allows for Real-Time Determination of Fat and Protein Content in Milk–Air Mixtures with High Accuracy. - Astashev, Maxim E.; Ignatenko, Dmitry N.; Molkova, Elena A.; Gogolev, Ivan M.; Onegov, Andrey V.; Smolentsev, Sergey Y.; Khakimov, Artem R.; Ruzin, Semen S.; Budnikov, Dmitry A.; Pavkin, Dmitriy Yu.; Gudkov, Sergey V. (Sensors (14248220), 2026)