with Ernest S. Croot III, Robin Pemantle and Prasad Tetali Article	Sharp transitions in making squares Annals of Mathematics, 175, 1507-1550
with Andras Biro Article	Zeta functions for ideal classes in real quadratic fields, at s=0 Journal of Number Theory, 132, 1807-1829
Article	Primitive prime factors in second-order linear recurrence sequences Acta Arithmetica 155, 431-452

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