To cite spikeslab in publications use:

Ishwaran H., Rao J.S. and Kogalur U.B. (2013). spikeslab : Prediction and variable selection using spike and slab regression, R package version 1.1.5.

Ishwaran H. and Rao J.S. (2005). Spike and slab variable selection: frequentist and Bayesian strategies.Ann. Statist. 33(2), 730--773.

Ishwaran H. and Rao J.S. (2010). Generalized ridge regression: geometry and computational solutions when p is larger than n.Manuscript.

Corresponding BibTeX entries:

@Manual{, title = {spikeslab : Prediction and variable selection using spike and slab regression}, author = {H. Ishwaran and J.S. Rao and U.B. Kogalur}, publisher = {manual}, year = {2013}, note = {R package version 1.1.5}, url = {http://cran.r-project.org/web/packages/spikeslab/}, pdf = {http://cran.r-project.org/web/packages/spikeslab/spikeslab.pdf}, }

@Article{, title = {Spike and slab variable selection: frequentist and Bayesian strategies}, author = {H. Ishwaran and J.S. Rao}, journal = {Ann. Statist.}, year = {2005}, volume = {33}, number = {2}, pages = {730--773}, url = {http://arXiv.org/abs/math/0505633v1}, pdf = {http://arxiv.org/pdf/math.ST/0505633}, }

@Article{, title = {Generalized ridge regression: geometry and computational solutions when p is larger than n}, author = {H. Ishwaran and J.S. Rao}, journal = {Manuscript}, year = {2010}, }