Santibáñez P, Michaud AB, Vick-Majors TJ, et al. Differential incorporation of bacteria, organic matter, and inorganic ions into lake ice during ice formation. Journal of Geophysical Research: Biogeosciences. 2019;124:585 - 600. doi:10.1029/2018JG004825.

D?Andrilli J, Foreman CM, Marshall AG, McKnight DM. Characterization of IHSS Pony Lake fulvic acid dissolved organic matter by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and fluorescence spectroscopy. Organic Geochemistry. 2013;65:19 - 28. doi:10.1016/j.orggeochem.2013.09.013.