What collection of papers by a Russian-British social and political theorist appeared in 1969?
Isaiah Berlin Sir Isaiah Berlin (6 June 1909 – 5 November 1997) was a Russian-British social and political theorist, philosopher and historian of ideas. He was an essayist, conversationalist, raconteur, and lecturer. In its obituary of the scholar, the "Independent" stated that "Isaiah Berlin was often described, especially in his old age, by means of superlatives: the world's greatest talker, the century's most inspired reader, one of the finest minds of our time [...] there is no doubt that he showed in more than one direction the unexpectedly large possibilities open to us at the top end of the range of human potential".
Nikolai Kasterin Nikolai Petrovich Kasterin (1869–1947) was a Russian physicist, student of Aleksandr Stoletov. His 1903 doctoral dissertation, portions of which were published in German in the Proceedings of the Royal Academy of Sciences in Amsterdam under the sponsorship of Heike Kamerlingh Onnes, is considered to be a pivotal contribution to multiple scattering theory (MST) by such experts as Paul Peter Ewald and Jan Korringa. The MST formalism is widely used for electronic structure calculations as well as diffraction theory, and is the subject of many books.