Additional information:

ESR:
    documentation:
          expt. doc.
          handwaving introduction to ESR
    Links:

Hand waving guide to Electron Spin Resonance (ESR) (Univ. of St. Andrews)
Terahertz technology group (Univ. of St. Andrews)
ESR-Spektroskopie (Uni Oldenburg)
Electron Paramagnetic Resonance (EPR, ESR, EMR, ENDOR) Information (FU Berlin)
EPR Research Group ETH Zurich