TY - JOUR A1 - Kliem, Bernhard A1 - Krüger, Albrecht A1 - Hildebrandt, Joachim A1 - Garaimov, V. I. A1 - Stepanov, A. V. T1 - Second-harmonic plasma radiation of magnetically trapped electrons in stellar coronae Y1 - 1999 SN - 0004-637X ER -