Beyond the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>T</mml:mi><mml:mn>1</mml:mn></mml:msub></mml:math>Limit: Singlet Nuclear Spin States in Low Magnetic FieldsMarina Carravetta, Malcolm H. Levitt|Physical Review Letters|2004Cited by 383