Alberto STRUMIA. Simple Approach to Quantization of the Gravitational Field. New Trends in Physical Science Research Vol. 6, [S. l.], p. 124–131, 2022. DOI: 10.9734/bpi/ntpsr/v6/2741A. Disponível em: https://stm.bookpi.org/NTPSR-V6/article/view/7222. Acesso em: 11 jun. 2026.