The aim of this paper is to analyse the efficiency of the travel agencies operatingin Spain, and to examine the determining factors of such efficiency, in terms of verticalintegration, market concentration, size and performance. The methodology employed is based on different techniques for the...

The purpose of this paper consists in analyzing the impact of obtaining a quality certification (ISO 9000) on firms¿ market value, and to examine its influence on volatility. The sample used contains all the firms that, while trading in the Spanish stock market, have ever obtained a quality...