SEARCH Articles Figures Tables HOHAHA Hartmann-Hahn spectroscopy Hahne Hartmann-Hahn Hartmann-Hahn spectroscopy principle Heteronuclear Hartmann-Hahn Spectroscopy Homonuclear Hartmann-Hahn spectroscopy Homonuclear Hartmann-Hahn spectroscopy HOHAHA) Homonuclear Hartmann-Hahn spectroscopy transfer Total correlation spectroscopy homonuclear Hartmann-Hahn