Complex sentence: Calculation of particle size distribution is based on theoretical models that are well verified up to 50% by volume of dispersed particles (see the Dukhin and Goetz reference), where there are many examples of successful particle size distribution measurements.
Split into simpler sentences: Calculation of particle size distribution is based on theoretical models that are well verified up to 50% by volume of dispersed particles. See the Dukhin and Goetz reference, where there are many examples of successful particle size distribution measurements.