Comment on “Electromagnetic momentum conservation in media”, by I. Brevik and S. Å. Ellingsen, Ann. Phys. 326 (2011) 754

A recent article by Brevik and Ellingsen discusses electromagnetic momentum in a configuration consisting of a point charge and a long solenoid, immersed in a dielectric medium of uniform permittivity. Because they neglect the “hidden” momentum in the solenoid, their treatment is potentially misleading.