Bosak, Tanja; Souza-Egipsy, Virginia; Corsetti, Frank A.; Newman, Dianne K. (2004). “Micrometer-scale porosity as a biosignature in carbonate crusts”. Geology32 (9): 781. Bibcode: 2004Geo....32..781B. doi:10.1130/G20681.1.
McSween, Harry Y. (2019), “The Search for Biosignatures in Martian Meteorite Allan Hills 84001”, in Cavalazzi, Barbara; Westall, Frances, Biosignatures for Astrobiology, Advances in Astrobiology and Biogeophysics, Springer International Publishing, pp. 167–182, doi:10.1007/978-3-319-96175-0_8, ISBN9783319961750
Garcia-Ruiz, Juan-Manuel Garcia-Ruiz (199-12-30). “Morphological behavior of inorganic precipitation systems – Instruments, Methods, and Missions for Astrobiology II”. SPIE Proceedings. Instruments, Methods, and Missions for Astrobiology II Proc. SPIE 3755: 74. doi:10.1117/12.375088. "It is concluded that "morphology cannot be used unambiguously as a tool for primitive life detection.""
Bosak, Tanja; Souza-Egipsy, Virginia; Corsetti, Frank A.; Newman, Dianne K. (2004). “Micrometer-scale porosity as a biosignature in carbonate crusts”. Geology32 (9): 781. Bibcode: 2004Geo....32..781B. doi:10.1130/G20681.1.