Recurrent graphs where two independent random walks collide finitely often. Krishnapur, Manjunath; Peres, Yuval — 2004 Electronic Communications in Probability [electronic only]
Determinantal processes and independence. Ben Hough, J.; Krishnapur, Manjunath; Peres, Yuval; Virág, Bálint — 2006 Probability Surveys [electronic only]