Mc Loughlin MJ, Mc Loughlin S (2012). "Cardiac auscultation: Preliminary findings of a pilot study using continuous Wave Doppler and comparison with classic auscultation". Int J Cardiol. 167 (2): 590–591. doi:10.1016/j.ijcard.2012.09.223. PMID23117017.
Mc Loughlin MJ, Mc Loughlin S (2012). "Cardiac auscultation: Preliminary findings of a pilot study using continuous Wave Doppler and comparison with classic auscultation". Int J Cardiol. 167 (2): 590–591. doi:10.1016/j.ijcard.2012.09.223. PMID23117017.