Subthreshold Pion Production in Heavy-Ion Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>8</mml:mn><mml:mn>5</mml:mn><mml:mi>A</mml:mi></mml:math>MeVT. Johansson, J. Mougey, B. Norén et al.|Physical Review Letters|1982Cited by 70
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