Phys Rev Lett. 1993 Nov 22;71(21):3561-3564 doi: 10.1103/PhysRevLett.71.3561.

Dynamic nuclear polarization with a cyclotron resonance maser at 5 T

Becerra LR, Gerfen GJ, Temkin RJ, Singel DJ, Griffin RG.

PMID: 10055008