Blau, MatthiasMatthiasBlauTheisen, StefanStefanTheisen2024-10-142024-10-142009https://boris-portal.unibe.ch/handle/20.500.12422/109738enString theory as a theory of quantum gravity: A status reportarticle10.7892/boris.3643100026459850000610.1007/s10714-008-0752-z