2019 https://books.google.com/books?hl=en&lr=&id=hGmtDwAAQBAJ&oi=fnd&pg=PA10&dq=%22global+catastrophic+risk%22%7C%22catastrophic+risk%22%7C%22x+risk%22&ots=LHVp8RRlN4&sig=RyfZ_ADgtkyNu4RtABPUlB9DFG0 Book chapter
2019 https://books.google.com/books?hl=en&lr=&id=hGmtDwAAQBAJ&oi=fnd&pg=PA10&dq=%22global+catastrophic+risk%22%7C%22catastrophic+risk%22%7C%22x+risk%22&ots=LHVp8RRlN4&sig=RyfZ_ADgtkyNu4RtABPUlB9DFG0 Book chapter