M. Ali Khan, Yeneng Sun. Integrals of Set-Valued Functions with a Countable Range. Math. Oper. Res., 21(4):946-954, 1996. [doi]
@article{KhanS96,
title = {Integrals of Set-Valued Functions with a Countable Range},
author = {M. Ali Khan and Yeneng Sun},
year = {1996},
doi = {10.1287/moor.21.4.946},
url = {http://dx.doi.org/10.1287/moor.21.4.946},
researchr = {https://researchr.org/publication/KhanS96},
cites = {0},
citedby = {0},
journal = {Math. Oper. Res.},
volume = {21},
number = {4},
pages = {946-954},
}