Perfect Square Packings. - Adam Chalcraft (J. Comb. Theory A, 2000)

How to build a probability-free casino. - Adam Chalcraft; Randall Dougherty; Christopher F. Freiling; Jason Teutsch (Inf. Comput., 2012)

The Promise Polynomial Hierarchy - Adam Chalcraft; Samuel Kutin; David Petrie Moulton (CoRR, 2013)