PACS numbers

42.60.Rn Relaxation oscillations and long pulse operation
  1. N.N. Sobolev, V.V. Sokovikov “CO2 lasers10 153–170 (1967)
    42.55.Lt, 42.60.Da, 42.60.Gd, 42.60.By, 42.60.Rn, 42.60.Jf (all)
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