1. R.C. Dalang, T.S. Mountford, in Level Sets, Bubbles and Excursions of a Brownian sheet. Infinite dimensional stochastic analysis (Amsterdam, 1999), 117–128, Verh. Afd. Natuurkd. 1. Reeks. K. Ned. Akad. Wet., 52, R. Neth. Acad. Arts Sci., Amsterdam, 2000.
2. R.C. Dalang, J.B. Walsh, Geography of the level sets of the Brownian sheet. Prob. Theor. Rel. Fields 96, 153–176 (1993)
3. R.C. Dalang, J.B. Walsh, The structure of the Brownian bubble. Prob. Theor. Rel. Fields 96, 475–501 (1993)
4. W. Ehm, Sample function properties of multiparameter stable processes. Z. Wahrsch. Verw. Gebiete 56, 195–228 (1981)
5. N. Ikeda, S. Watanabe, Stochastic Differential Equations and Diffusion Processes. North Holland Mathematical Library (Elsevier Science, Berlin, 1981)