Overbidding in Fixed Rate Tenders: The Role of Exposure Risk
Christian Ewerhart, Nuno Cassola, Natacha Valla
Journal of Banking and Finance, vol. 36, 2012, p. 539-549.

Declining Valuations and Equilibrium Bidding in Central Bank Refinancing Operations
Christian Ewerhart, Nuno Cassola, Natacha Valla
International Journal of Industrial Organization, vol. 28, 2010, p. 30-43.

Optimal Allotment Policy in Central Bank Open Market Operations
Christian Ewerhart, Nuno Cassola, Steen Ejerskov, Natacha Valla
European Journal Of Finance, vol. 15, 2009, p. 405-420.

Manipulation in money markets
Christian Ewerhart, Nuno Cassola, Steen Ejerskov, Natacha Valla
International Journal Of Central Banking, vol. 3, 2007, p. 113-148.