膨胀宇宙的未来531...22K. A dying universe: the long-term fate and evolution of astrophysical objects, Fred C. Adams and Gregory Laughlin, Reviews of Modern Physics
4-甲基-2-戊醇Safety and Health (NIOSH). Howard, Philip H., Handbook of Environmental Fate and Exposure Data for Organic Chemicals 4, Boca Raton, Florida: CRC Press: