@article{RO_2020__54_3_873_0,
     author = {Gonz\'alez Silva, Pedro Henrique and Macambira, Ana Fl\'avia U. S. and Pinto, Renan Vicente and Simonetti, Luidi and Maculan, Nelson and Michelon, Philippe},
     title = {New proposals for modelling and solving the problem of covering solids using spheres of different radii},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {873--882},
     publisher = {EDP-Sciences},
     volume = {54},
     number = {3},
     year = {2020},
     doi = {10.1051/ro/2019041},
     mrnumber = {4078188},
     zbl = {1443.90250},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ro/2019041/}
}