@article {1806.08348, archivePrefix = {arXiv}, eprint = {1806.08348}, primaryClass = {math.DG}, author = {Jeffrey L. Jauregui}, title = {Smoothing the Bartnik boundary conditions and other results on Bartnik's quasi-local mass}, year = {2018}, url = {http://arxiv.org/abs/1806.08348} }