@article{10_4171_ifb_510,
     author = {Manuel Friedrich and Wojciech G\'orny and Ulisse Stefanelli},
     title = {The double-bubble problem on the square lattice},
     journal = {Interfaces and free boundaries},
     pages = {79--134},
     year = {2024},
     volume = {26},
     number = {1},
     doi = {10.4171/ifb/510},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ifb/510/}
}