Miller, A. Z., Hernández-Mariné, M., Jurado, V., Dionísio, A., Barquinha, Fortunato, Afonso, M. J., Chaminé, H. I., Saiz-Jimenez C.  2012.  Enigmatic reticulated filaments in subsurface granite. Environmental Microbiology Reports. 4(6):596?603.