IT'S ODD THAT I'VE HEARD OF VON MISES & HAYEK

but not Oskar Lange until very recently.   Lange provided a formal rebuttal to Von Mises' claim that a socialist economy could not in principle mimic a capitalist market system:

The Mises-Hayek argument met its most formidable counterargument in two brilliant articles by Oskar Lange, a young economist who would become Poland’s first ambassador to the United States after World War II. Lange set out to show that the planners would, in fact, have precisely the same information as that which guided a market economy. The information would be revealed as inventories of goods rose and fell, signaling either that supply was greater than demand or demand was greater than supply. Thus, as planners watched inventory levels, they were also learning which of their administered (i.e., state-dictated) prices were too high and which too low. It only remained, therefore, to adjust prices so that supply and demand balanced, exactly as in the marketplace.

You can find the argument in:

Lange, Oskar, and Fred Taylor. On the Economic Theory of Socialism. New York: McGraw-Hill, 1938.