CatephoresGeorge. 1989. An Introduction to Marxist Economics.New York: New York University Press.
2.
IoannidesAlexis, and StavrosMavroudeas. 2010. “Work More or Work Harder? The Duration and Intensity of Work in Marx's Capital.”Science & Society, 74:1, 85–102.
3.
IoannidesAlexis, and StavrosMavroudeas. 2011. “A Model for the Relationship Between Working Time and the Intensity of Labour.” Bulletin of Political Economy, 5:2, 111–127.
4.
ItohMakoto. 1988. The Basic Theory of Capitalism.London: Macmillan.
5.
JoosungRhie. 1999. “Labour Intensity and Surplus Value in Karl Marx: A Note.” History of Economic Ideas, 7:3, 181–191.
6.
MarxKarl. 1969. Value, Price and Profit.New York: International Publishers.
MavroudeasStavros, and AlexisIoannides. 2011. “Duration, Intensity and Productivity of Labour and the Distinction Between Absolute and Relative Surplus Value.” Review of Political Economy, 23:3, 421–437.
9.
PhilpBruce, GarySlater, and DavidHarvie. 2005.“Preferences, Power, and the Determination of Working Hours.”Journal of Economic Issues, 39:1, 75–90.