Seasonality and spatial integration in agricultural (product) markets
将季节性成分纳入“一价定律”的检验方法，分析欧盟软小麦市场的空间整合程度，发现部分市场整合而部分未整合，结果与忽略季节性的传统检验不同。
Abstract The recent testing approaches of the ‘Law of One Price’ which ate based on co‐integration analysis are modified by incorporating the seasonal components of the agricultural price series into the testing procedure. Application of the modified testing approach to the soft wheat market of live European Union member stales produces mixed results as some of the markets turn out to be integrated while in some cases a unified market cannot be assumed. I hese results differ in some cases from those obtained by co‐integration tests which ignore seasonal unit roots.