Fisher, Evan; Berman, Matthew; Vowels, Natalie; Wilson, … - In: Statistics & Probability Letters 48 (2000) 2, pp. 141-151
An integral condition is derived that is equivalent to the condition that the expected number of excursions by a normal random walk beyond a boundary is finite. In the case where the expected number of excursions is infinite, the asymptotic size is determined relative to the number of steps....