J. L. Williams

Dain’s invariant on non-time symmetric initial data sets

J. A. Valiente Kroon, J. L. Williams, 2017, 1701.05434.

Positive radial solutions for a class of quasilinear boundary value problems in a ball

D. Hai, J. L. Williams, 2012 .

A perturbative approach to the construction of initial data on compact manifolds

J. V. Kroon, J. L. Williams, 2018, Pure and Applied Mathematics Quarterly.