@string{ac="Algorithms and Complexity Group, TU Wien"}
@TechReport{Chew21tr,
author = {Leroy Chew},
title = {Hardness and Optimality in QBF Proof Systems Modulo NP},
institution = AC,
year = {2021},
number = {AC-TR-21-013},
url = {http://www.ac.tuwien.ac.at/files/tr/ac-tr-21-013.pdf},
}