Methods for increasing the sensitivity and signal-to-noise ratio in mass spectrometry for the determination of cocaine and ethylbenzoylecgonine in urine. - Ruxandra Populeanu; Andrea Raluca Bajanaru; Gabriela Anghelescu; Mihai Ionica; Genica Caragea; Radu Alexandru Macovei; Florin Grama; Daniel Cristian (ECAI, 2017)