Takada and Goto have started with the study of exchange and correlation effects in a quasi-two-dimensional electron system in strong magnetic fields with an immediate application to graphite [1]. Takada has treated the problem in the framework of the local-field correction by extending the STLS theory which is known to be very successful in the electron gas without a magnetic field. By considering the relation  to the fractional quantum Hall effect, Takada is now trying to obtain a unified view of the correlation effect with the change of dimensionality from three to two.  
  Takahashi and Takada have shown that the SDW formation is a more plausible candidate than CDW for the explanation of the anomaly in the magnetoresistance observed in graphite in magnetic fields of 25-50 T [2].