Published online: 30 May 2011
DOI: 10.1140/epjp/i2011-11055-3
Published online: 27 May 2011
DOI: 10.1140/epjp/i2011-11054-4
Published online: 26 May 2011
DOI: 10.1140/epjp/i2011-11053-5
Published online: 26 May 2011
DOI: 10.1140/epjp/i2011-11052-6
Published online: 26 May 2011
DOI: 10.1140/epjp/i2011-11051-7
Published online: 26 May 2011
DOI: 10.1140/epjp/i2011-11050-8
Published online: 24 May 2011
DOI: 10.1140/epjp/i2011-11049-1
Published online: 13 May 2011
DOI: 10.1140/epjp/i2011-11048-2
Published online: 10 May 2011
DOI: 10.1140/epjp/i2011-11047-3
Published online: 06 May 2011
DOI: 10.1140/epjp/i2011-11046-4
Editors-in-Chief
B. Fraboni and G. García López
B. Fraboni and G. García López
The authors wish to thank the anonymous reviewers for their helpful comments and suggestions. They are also grateful to EPJP for their corrections pertaining to the English language.