This book gives an authoritative overview of the literature on non-stationarity, integration and unit roots, providing direction and guidance. It also provides detailed examples to show how the techniques can be applied in practical situations and the pitfalls to avoid.

One of the daunting problems in international finance is the weak explanatory power of existing theories of the nominal exchange rates, the so-called "foreign exchange rate determination puzzle". We propose a continuous-time model to study the impact of order flow on foreign exchange rates. The...