Excitation spectrum of interacting bosons in the Mean-Field Infinite-Volume limit
J. Dereziski, M.M. Napiórkowski, Annales Henri Poincaré 15 (2014) 2409–2439.

Atoms with bosonic &quot;electrons&quot; in strong magnetic fields
B. Baumgartner, R. Seiringer, Annales Henri Poincare 2 (2001) 41–76.