@inproceedings{felixself-adjointness,
title={Self-Adjointness of the Dirac Hamiltonian for a Class of Non-Uniformly Elliptic Boundary Value Problems},
author={Felix Finster, and Christian Röken},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170207001052443443213},
}