Apparently, this user prefers to keep an air of mystery about them.
7 Mean distance from origin after $N$ equal steps of Random-Walk in a $d$-dimensional space. Mar 11 '12
2 Random Walk - expected distance from Origin Apr 10 '12
2 Probability, Random Walk, Distance from Origin after N steps in 2 and 3 dimensions [duplicate] Sep 1 '13
1 Reference Request, Random Walk [duplicate] Jun 7 '13