Complex sentence: The literature on Financial Crises provides several theoretical Economic models that try to understand the linkages between banking and currency crises, and the causality direction is not unambiguous: one stream argues that currency crises cause banking crises Stoker, James (1994).
Split into simpler sentences: The literature on Financial Crises provided several theoretical Economic models that tried to understand the linkages between banking and currency crises. However, the causality direction was not unambiguous: while one research stream argued that currency crises could cause banking crises Stoker, James (1994).