Doitchinov, B.D. & Veliov, V. <https://pure.iiasa.ac.at/view/iiasa/2479.html>  (1993).  Parametrizations of Integrals of Set-Valued Mappings and Applications.   Journal of Mathematical Analysis and Applications 179 (2) 483-499. 10.1006/jmaa.1993.1363 <https://doi.org/10.1006/jmaa.1993.1363>.