Joye, AlainPfister, Charles-Edouard2008-11-272008-11-272008-11-27199110.1007/BF02099288https://infoscience.epfl.ch/handle/20.500.14299/31883WOS:A1991GD41100002Exponentially small adiabatic invariant for the Schrödinger equationtext::journal::journal article::research article