The phrase "market socialism" has occasionally been used in reference to any attempt by a Soviet-type planned economy to introduce market elements into its economic system. In this sense, "market socialism" was first attempted during the 1920s in the Soviet Union as the New Economic Policy (NEP) before being abandoned. Later, elements of "market socialism" were introduced in Hungary (where it was nicknamed " goulash communism "), Czechoslovakia and Yugoslavia (see Titoism ) in the 1970s and 1980s. The contemporary Economy of Belarus has been described as a "market socialist" system. The Soviet Union attempted to introduce a market system with its perestroika reforms under Mikhail Gorbachev . During the later stages there was talk within top circles that the USSR should move toward a market-based socialist system.