Over the past few years, the Value at Risk indicator (VaR) has evolved, without doubt, into the most frequently used comprehensive tool for assessment of potential losses caused by adverse changes in market rates. However, the common models used for VaR assessment are based only on mid prices...

The paper focuses on a comparison of three different approaches that seek to explain the existence of public goods. First the mainstream Samuelson-Musgrave approach, based on the search for an objective nature of so-called pure public goods, is critically evaluated, especially with respect to...