Petroleum (Wikipedia)
Natural gas (Wikipedia)
A Perez-Mellor, P Parneix, F Calvo, C Falvo, Finite-temperature stability of hydrocarbons: Fullerenes vs flakes, JCP 157, 171102 (2022)
L J Conway, A Hermann, High Pressure Hydrocarbons Revisited: From van der Waals Compounds to Diamond, Geosciences 9, 227 (2019)
G Saleh, A R Oganov, Novel Stable Compounds in the C-H-O Ternary System at High Pressure, Sci Rep 6, 32486 (2016)