@unpublished{silvis-ipam14a-pres,
    author = {Silvis, M. and Verstappen, R. and Veldman, A.},
    date = {2014-09-18},
    title = "The higher-order gradient model for large-eddy simulation of turbulent flows",
    location = {\textit{Mathematics of Turbulence}, Institute for Pure and Applied Mathematics, University of California, Los Angeles, United States of America, September 8 -- December 12, 2014},
}