TY - RPRT TI - A two-dimensional quadrupole ion trap mass spectrometer. AU - Jae C Schwartz AU - Michael W Senko AU - John E P Syka PY - 2002 DO - 10.1016/s1044-0305(02)00384-7 UR - https://pubmed.ncbi.nlm.nih.gov/12056566/ ID - 12056566 ER -