Hartling, L., Featherstone, R., Nuspl, M., Shave, K., Dryden, D. M., & Vandermeer, B. (2017). Grey literature in systematic reviews: A cross-sectional study of the contribution of non-English reports, unpublished studies and dissertations to the results of meta-analyses in child-relevant reviews. BMC Med Res Methodol.

Hartling, Lisa, Robin Featherstone, Megan Nuspl, Kassi Shave, Donna M. Dryden, and Ben Vandermeer. "Grey Literature in Systematic Reviews: A Cross-sectional Study of the Contribution of Non-English Reports, Unpublished Studies and Dissertations to the Results of Meta-analyses in Child-relevant Reviews." BMC Med Res Methodol 2017.

Hartling, Lisa, et al. "Grey Literature in Systematic Reviews: A Cross-sectional Study of the Contribution of Non-English Reports, Unpublished Studies and Dissertations to the Results of Meta-analyses in Child-relevant Reviews." BMC Med Res Methodol 2017.