**About the Editors**

#### **Leandro Pardo**

Leandro Pardo received the B.Sc. and Ph.D. degrees in mathematics from the Complutense University of Madrid, Madrid, Spain, in 1976 and 1980, respectively. He has been a Full Professor of Statistics and Operations Research with the Department of Statistics and Operational Research, Faculty of Mathematics, Complutense University of Madrid, Madrid, Spain, since 1993. He was elected "Distinguished Eugene Lukacs Professor" in Bowling Green State (Bowling Green, OH, USA) in 2004.

#### **Nirian Martin**

Nirian Martin received the B.Sc. and Ph.D. degrees in Statistics from the Complutense University of Madrid, Madrid, Spain, in 2003 and 2007, respectively. She is currently an Associate Professor of Statistics and Operations Research with the Department of Financial and Actuarial Economics and Statistics, Complutense University of Madrid, Madrid, Spain.
