The supplementary hypothesis was developed over the 19th and 20th centuries, primarily deriving from a dissatisfaction with the adequacy of the documentary hypothesis, and came to a head in the 1970s with the publication of works by John Van Seters, Rolf Rendtorff, and Hans Heinrich Schmid. In their book, An Introduction to the Bible, Kugler and Hartin argue that "the work of John Van Seters best reflects the revival of the supplementary hypothesis."[2]