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  • Helios Herrera, Itam Enrique Schroth, Hec Lausanne, Fame, Douglas Gale, William Baumol +6 others
  • 2003
their advice. All errors in the paper are only ours. Abstract Investment banks …nd it pro…table to invest in the development of innovative derivative securities even without being able to preclude early competition from other investment banks using patents. To explain this, we assume that the developer can learn from the …rst issues of the innovative(More)
Under ambient conditions, almost all metals are coated by an oxide. These coatings, the result of a chemical reaction, are not passive. Many of them bind, activate and modify adsorbed molecules, processes that are exploited, for example, in heterogeneous catalysis and photochemistry. Here we report an effect of general importance that governs the bonding,(More)
BACKGROUND Carotid Duplex Ultrasonography (CDUS) is one of the non-invasive imaging modalities used to evaluate for carotid artery stenosis. However, it is often used in patients with coronary artery disease (CAD), peripheral artery disease (PAD), before heart surgery, syncope and non-specific neurological symptoms although its value is unclear. Our study(More)
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