Lawlor, Gary R. (2014), "Double bubbles for immiscible fluids in ", Journal of Geometric Analysis, 24 (1): 190–204, doi:10.1007/s12220-012-9333-1, MR3145921
Reichardt, Ben W.; Heilmann, Cory; Lai, Yuan Y.; Spielman, Anita (2003), "Proof of the double bubble conjecture in and certain higher dimensional cases", Pacific Journal of Mathematics, 208 (2): 347–366, doi:10.2140/pjm.2003.208.347, MR1971669
Sullivan, John M. (1999), "The geometry of bubbles and foams", in Sadoc, Jean-François; Rivier, Nicolas (eds.), Foams and Emulsions: Proc. NATO Advanced Study Inst. on Foams and Emulsions, Emulsions and Cellular Materials, Cargèse, Corsica, 12–24 May, 1997, NATO Adv. Sci. Inst. Ser. E Appl. Sci., vol. 354, Dordrecht: Kluwer Acad. Publ., pp. 379–402, doi:10.1007/978-94-015-9157-7_23, MR1688327
Lawlor, Gary R. (2014), "Double bubbles for immiscible fluids in ", Journal of Geometric Analysis, 24 (1): 190–204, doi:10.1007/s12220-012-9333-1, MR3145921
Reichardt, Ben W.; Heilmann, Cory; Lai, Yuan Y.; Spielman, Anita (2003), "Proof of the double bubble conjecture in and certain higher dimensional cases", Pacific Journal of Mathematics, 208 (2): 347–366, doi:10.2140/pjm.2003.208.347, MR1971669
Sullivan, John M. (1999), "The geometry of bubbles and foams", in Sadoc, Jean-François; Rivier, Nicolas (eds.), Foams and Emulsions: Proc. NATO Advanced Study Inst. on Foams and Emulsions, Emulsions and Cellular Materials, Cargèse, Corsica, 12–24 May, 1997, NATO Adv. Sci. Inst. Ser. E Appl. Sci., vol. 354, Dordrecht: Kluwer Acad. Publ., pp. 379–402, doi:10.1007/978-94-015-9157-7_23, MR1688327