Direct-EI LC/MS-

Electron-Impact at Micro-Liter/min Flow Rates
Palma, P., Famiglini, G., Trufelli, H., Cappiello, A., "Toward a universal detector for small molecule applications: Direct-EI in LC-MS", LC-GC 29, pages 68-75 (January 2011).
also see their webpage: LC-MS Group