Ota Sik 
Plan and Market Under Socialism [PDF ebook] 

This title was first published in 1967. The main ideas in this book originated some time in 1957-1958 – the period when the first reorganization of planning and management in Czechoslovakia was being prepared. Even at that time, the deeper analyses of the growing economic contradictions and the disclosure of their causes were leading the author to recognize the fact that the maturing socialist economy and the advanced social division of labour, following on the industrially developed capitalist economy in this country, would inevitably require a thorough-going use of socialist market relationships.