1. High resolution on a quadrupole ion trap mass spectrometer
2. High mass-resolution using a quadrupole ion-trap mass spectrometer
3. and Proceedings of thed 39th Congerence on Mass Spectrometry and Allied topics, Nashville, Tn, p. 469, ASMS, East Lansing (1991).
4. and Proceedings of the 39th Conference on Mass Spectrometry and Allied Topics, Nashville, TN, p. 540, ASMS, Edast Lansing (1991).
5. and POroceeddings of the 39th Conference on Mass Spectrometry and Allied Tolpics, Nashville, TN, p. 532, ASMS, East Lansing (1991).