Kenta,Asahina, Shinya,Nomoto. The first experimental demonstration of thermal transformation of bacteriochlorophylls into benzoporphyrins in sediments. Researches in organic geochemistry. 2012. 28. 19-22
Asahina,Kenta, Ogawa,Yohei, Asano,Junya, Kumagai,Gen, Nomoto,Shinya. Elucidation of side chain extension mechanism of geoporphyrins by heating experiments of vinylporphyrins. Researches in organic geochemistry. 2011. 27. 0. 129-142