Business cycle by Charles Dunoyer, and similar theories, showing signs of influence by Sismondi, were developed by Johann Karl Rodbertus. Periodic crises in capitalism formed the basis of the theory of Karl Marx, who further claimed that these crises were increasing in severity and, on the basis of which, he predicted a communist revolution. Though only passing references in "Das Kapital" (1867) refer to crises, they were extensively discussed in Marx's posthumously published books, particularly in "Theories of Surplus Value". In "Progress and Poverty" (1879), Henry George focused on land's role in crises – particularly land speculation – and proposed a single
Who Wrote The Dead Sea Scrolls? Hartmut Stegemann. "Qumran und das Judentum zur Zeit Jesu" 84 (1994): 175-94 as basing "his support of the Essene hypothesis of factors of hierarch, initiation rites, community of goods, ritual baths, a common meal and views on marriage as well as calendar." They then refer to the alternative estimate of Golb, "that the scrolls came from Jerusalem to a fortress in Qumran during the siege of Jerusalem around 70 CE Who Wrote The Dead Sea Scrolls? Who Wrote The Dead Sea Scrolls?: The Search For The Secret Of Qumran is a book by Norman Golb which intensifies the debate over