Dalang, Robert C.Walsh, John B.2008-12-012008-12-012008-12-01199310.1007/BF01192131https://infoscience.epfl.ch/handle/20.500.14299/32016Brownian sheetlevel setclusterslength of excursionsGeography of the level sets of the Brownian sheettext::journal::journal article::research article