Inverse Spectral Problems for Schr\"odinger-Type Operators with   Distributional Matrix-Valued Potentials
  The principal purpose of this note is to provide a reconstruction procedure for distributional matrix-valued potential coefficients of Schr\"odinger-type operators on a half-line from the underlying Weyl-Titchmarsh function. 
Jonathan Eckhardt, Fritz Gesztesy, Roger Nichols, Alexander   Sakhnovich, and Gerald Teschl
math.SP math-ph math.MP