Erdős number

My Erdős number is three by the following route. 

Clegg, Richard G.; Dodson, Maurice Markov chain-based method for generating long-range dependence. Phys. Rev. E (3) 72 (2005), no. 2, 026118

via Dodson

Bovey, J.D. , Dodson, Maurice The Hausdorff dimension of systems of linear forms , Acta Arith. 46 (1986), 337-358.

via Bovey

Bovey J D, Erdős P and Niven I, Conditions for zero-sum modulo n, Canad. Math. Bull. 18 (1975) 27-29