TY - GEN AU - Kaidi,Justin AU - Parra-Martinez,Julio AU - Tachikawa,Yuji TI - Classification of String Theories via Topological Phases SN - 1079-7114 PY - 2020/// PB - Physical review letters N1 - Publication Type: Journal Article UR - https://doi.org/10.1103/PhysRevLett.124.121601 ER -