It looks like her research is here: http://math.stanford.edu/~mmirzakh/Research.html http://math.stanford.edu/~mmirzakh/Research.html And the paper in questio

It looks like her research is here: http://math.stanford.edu/~mmirzakh/Research.html http://math.stanford.edu/~mmirzakh/Research.html And the paper in question that got the Fields Medal might be one of these: http://math.stanford.edu/~mmirzakh/Papers/VA.pdf http://math.stanford.edu/~mmirzakh/Papers/VA.pdf https://arxiv.org/pdf/1206.5574.pdf https://arxiv.org/pdf/1206.5574.pdf It looks like her work involved counting the number of equivalent paths between two points on surfaces that have been punctured.