1. Development of NMR: from the early beginnings to the early 1990s;Becker,2007
2. Resonance absorption by nuclear magnetic moments in a solid;Purcell;Phys. Rev.,1946
3. Nuclear induction;Bloch;Phys. Rev.,1946
4. Early NMR experiences and experiments;Anderson,1996
5. Early perceptions in nuclear magnetic resonance (NMR);Arnold,1996