Latvian rublis printed quite similar notes but with different signatures on them. This government recognized the previously printed banknotes as legal tender. The designer of these banknotes was Jūlijs Madernieks. On 3 August 1922, the Cabinet of Ministers approved the "Regulations on Money" which introduced the "lats" as Latvia's national currency. The lats was equal to 50 rubļi. The rublis remained in circulation alongside the lats for a time. Latvia's regained independence was recognized by the Soviet Union on 6 September 1991. In the first four months of 1992, the country was adversely affected by inflation of the Soviet ruble. In addition,
Currency substitution displaced by a stable currency. At the beginning of this process, the store-of-value function of the domestic currency is replaced by the foreign currency. Then, the unit-of-account function of the domestic currency is displaced when many prices are quoted in a foreign currency. A prolonged period of high inflation will induce the domestic currency to lose its function as medium of exchange when the public carries out many transactions in foreign currency. Ize and Levy-Yeyati (1998) examine the determinants of deposit and credit currency substitution, concluding that currency substitution is driven by the volatility of inflation and the real exchange