Herrnstein, J. R.; Moran, J. M.; Greenhill, L. J.; Diamond, P. J.; Inoue, M.; Nakai, N.; Miyoshi, M.; Henkel, C.; Riess#, A. (1999). "A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk". Nature. 400 (6744): 539. arXiv:astro-ph/9907013. Bibcode:1999Natur.400..539H. doi:10.1038/22972. S2CID204995005.
Herrnstein, J. R.; Moran, J. M.; Greenhill, L. J.; Diamond, P. J.; Inoue, M.; Nakai, N.; Miyoshi, M.; Henkel, C.; Riess#, A. (1999). "A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk". Nature. 400 (6744): 539. arXiv:astro-ph/9907013. Bibcode:1999Natur.400..539H. doi:10.1038/22972. S2CID204995005.
Miyoshi, M.; Moran, J.; Herrnstein, J.; Greenhill, L.; Nakai, N.; Diamond, P.; Inoue, M. (1995). "Evidence for a black hole from high rotation velocities in a sub-parsec region of NGC4258". Nature. 373 (6510): 127. Bibcode:1995Natur.373..127M. doi:10.1038/373127a0. S2CID4336316.
Herrnstein, J. R.; Moran, J. M.; Greenhill, L. J.; Diamond, P. J.; Inoue, M.; Nakai, N.; Miyoshi, M.; Henkel, C.; Riess#, A. (1999). "A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk". Nature. 400 (6744): 539. arXiv:astro-ph/9907013. Bibcode:1999Natur.400..539H. doi:10.1038/22972. S2CID204995005.
Miyoshi, M.; Moran, J.; Herrnstein, J.; Greenhill, L.; Nakai, N.; Diamond, P.; Inoue, M. (1995). "Evidence for a black hole from high rotation velocities in a sub-parsec region of NGC4258". Nature. 373 (6510): 127. Bibcode:1995Natur.373..127M. doi:10.1038/373127a0. S2CID4336316.
Herrnstein, J. R.; Moran, J. M.; Greenhill, L. J.; Diamond, P. J.; Inoue, M.; Nakai, N.; Miyoshi, M.; Henkel, C.; Riess#, A. (1999). "A geometric distance to the galaxy NGC4258 from orbital motions in a nuclear gas disk". Nature. 400 (6744): 539. arXiv:astro-ph/9907013. Bibcode:1999Natur.400..539H. doi:10.1038/22972. S2CID204995005.
Miyoshi, M.; Moran, J.; Herrnstein, J.; Greenhill, L.; Nakai, N.; Diamond, P.; Inoue, M. (1995). "Evidence for a black hole from high rotation velocities in a sub-parsec region of NGC4258". Nature. 373 (6510): 127. Bibcode:1995Natur.373..127M. doi:10.1038/373127a0. S2CID4336316.
"DIAMOND, Dr Philip John". Who's Who 2014, A & C Black, an imprint of Bloomsbury Publishing plc, 2014; online edn, Oxford University Press.(subscription required)