Ricardo, Marx, Sraffa
Ernest Mandel & Alan Freeman
A Companion to African Philosophy
Kwasi Wiredu
Dr. Hayek on Money and Capital
Piero Sraffa
Gilbert Simondon's Psychic and Collective Individuation
David Scott
In the Beginning...was the Command Line
Neal Stephenson
Beyond the universal Turing machine
B. Jack Copeland & Richard Sylvan