The Mexican banking sector experienced a process of liberalization which aimed towards increasing the level of competition and efficiency. This paper studies the evolution of the efficiency of the Mexican banking sector from 2002 to 2012 and also analyses its relationship with the degree of banking competition. To do so, efficiency scores are estimated by applying the non-parametric methodology, Data Envelopment Analysis. Furthermore, the Boone Indicator is used to assess the degree of competition and included among other possible determinants of bank efficiency. The main results indicate increasing trends of efficiency in the banking sector during the period of study. Moreover, a direct relationship between banking competition and efficiency is observed. Besides, the capitalization index, market share and loan intensity increase efficiency whereas noninterest expenses and non performing loans decrease the level of efficiency. Lastly, in regards to the relative efficiency of local or foreign ownership of banks, it is found that the system's average efficiency trend is observed among both local and foreign banks, but local banks are somewhat more efficient.

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This article studies the genesis and early international expansion of the bank-issued credit card—an American innovation that quickly took hold in western Europe. Empirical evidence undermines the proposition of a single firm building a proprietary network. In fact, it was a constellation of participants that combined three characteristics, namely, a critical mass of both retail customers and retail merchants; the capacity to implement new technological solutions; and the ability to forge resilient collaborations across national borders. The evidence supports the value of collaboration in retail financial services as means of appropriating network externalities. Moreover, other conceptual and empirical studies, especially those based on two-sided markets, neglect the greater implications that initial conditions in this industry have on long-term success.