M. R. Dennis, “Nodal densities of planar gaussian random waves”, Eur. Phys. J. Spec. Top., 145, no. 1, 2007, 191
Georg Foltin, “Signed zeros of Gaussian vector fields density, correlation functions and curvature”, J. Phys. A: Math. Gen., 36, no. 6, 2003, 1729
R. Höhmann, U. Kuhl, H.-J. Stöckmann, J. D. Urbina, M. R. Dennis, “Density and correlation functions of vortex and saddle points in open billiard systems”, Phys. Rev. E, 79, no. 1, 2009, 016203
David A. Kessler, Isaac Freund, “Short- and long-range screening of optical phase singularities and C points”, Optics Communications, 281, no. 17, 2008, 4194
U. Kuhl, “Wave functions, nodal domains, flow, and vortices in open microwave systems”, Eur. Phys. J. Spec. Top., 145, no. 1, 2007, 103
Michael Barth, Hans-Jürgen Stöckmann, “Current and vortex statistics in microwave billiards”, Phys. Rev. E, 65, no. 6, 2002, 066208