Alvarez-Carreño C, Becerra A, Lazcano A (October 2013). "Norvaline and norleucine may have been more abundant protein components during early stages of cell evolution". Origins of Life and Evolution of the Biosphere. 43 (4–5): 363–75. Bibcode:2013OLEB...43..363A. doi:10.1007/s11084-013-9344-3. PMID24013929. S2CID17224537.
Alvarez-Carreño C, Becerra A, Lazcano A (October 2013). "Norvaline and norleucine may have been more abundant protein components during early stages of cell evolution". Origins of Life and Evolution of the Biosphere. 43 (4–5): 363–75. Bibcode:2013OLEB...43..363A. doi:10.1007/s11084-013-9344-3. PMID24013929. S2CID17224537.
Alvarez-Carreño C, Becerra A, Lazcano A (October 2013). "Norvaline and norleucine may have been more abundant protein components during early stages of cell evolution". Origins of Life and Evolution of the Biosphere. 43 (4–5): 363–75. Bibcode:2013OLEB...43..363A. doi:10.1007/s11084-013-9344-3. PMID24013929. S2CID17224537.
Alvarez-Carreño C, Becerra A, Lazcano A (October 2013). "Norvaline and norleucine may have been more abundant protein components during early stages of cell evolution". Origins of Life and Evolution of the Biosphere. 43 (4–5): 363–75. Bibcode:2013OLEB...43..363A. doi:10.1007/s11084-013-9344-3. PMID24013929. S2CID17224537.