Alexej Jerschow
   NMR publications authored by Alexej Jerschow.
   http://www.nyu.edu/projects/jerschow/pubs.html

NMR Knowledge Base
   Several on line books and articles in PDF format.
   http://www.spectroscopynow.com/coi/cda/home.cda?chId=5

NMR Relaxation and Dynamics
   Part of the book "Protein NMR Spectroscopy". Requires deep mathematical knowledges
   http://cpmcnet.columbia.edu/dept/gsas/biochem/labs/palmer/courses/Relaxation_and_Dynamics.html