@article{merikallio2015optical,
    title={Optical modeling of volcanic ash particles using ellipsoids},
    author={Merikallio, Sini and Mu{\~n}oz, Olga and Sundstr{\"o}m, Anu-Maija and Virtanen, Timo H and Horttanainen, Matti and Leeuw, Gerrit de and Nousiainen, Timo},
    journal={Journal of Geophysical Research: Atmospheres},
    volume={120},
    number={9},
    pages={4102--4116},
    year={2015},
    publisher={Wiley Online Library}
    }