3, 40, 325-412. http://archive.numdam.org/article/ASENS_1923_3_40__325_0.pdf* Deser, S. and Laurent, B. E. (1968) Gravitation without self-interaction, Annals of Physics 50, 76-101* Einstein, A.
(1993) Nonsymmetric gravity has unacceptable asymptotics, http://arxiv.org/PS_cache/qr-qc/pdf/9312/9312030/pdf* Deser, S. and Laurent, B. E. (1968) Gravitation without self-interaction, Annals of Physics 50, 76-101* Einstein, A.