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 ME; Ignatenko DN; Molkova EA; Gogolev IM; Onegov AV; Smolentsev SY; Khakimov AR; Ruzin SS; Budnikov DA; Pavkin DY; Gudkov SV (Sensors (Basel, Switzerland), 2026)