Testing astrophysical models for the PAMELA positron excess with cosmic ray nuclei.
Mertsch, P
Sarkar, S
Phys Rev Lett
volume 103
issue 8
081104
(21 Aug 2009)
https://www.ncbi.nlm.nih.gov/pubmed/19792709
Does cosmological structure formation require dark energy?
Sarkar, S
EAS Publications Series
volume 36
3-9
(10 Aug 2009)