Determining a magnetic Schr\"odinger operator with a continuous magnetic   potential from boundary measurements
  We show that the knowledge of the set of the Cauchy data on the boundary of a $C^1$ bounded open set in $\R^n$, $n\ge 3$, for the Schr\"odinger operator with continuous magnetic and bounded electric potentials determines the magnetic field and electric potential inside the set uniquely. The proof is based on a Carleman estimate for the magnetic Schr\"odinger operator with a gain of two derivatives. 
Katsiaryna Krupchyk, Gunther Uhlmann
math.AP math-ph math.MP