Y. Simard, N. Roy, C. Gervaise, and S. Giard. Analysis and modeling of 255 source levels of merchant ships from an acoustic observatory along {St}. {Lawrence} {Seaway}. The Journal of the Acoustical Society of America, volume 140, issue 3, pages 2002-2018, September 2016. Y. Simard, N. Roy, S. Giard, C. Gervaise, M. Conversano, and N. Ménard. Estimating whale density from their whistling activity: {Example} with {St}. {Lawrence} beluga. Applied Acoustics, volume 71, issue 11, pages 1081-1086, November 2010.