To cite sparseHessianFD in publications use:
Braun M (2017). “sparseHessianFD: An R Package for Estimating Sparse Hessian Matrices.” Journal of Statistical Software, 82(10), 1–22. doi:10.18637/jss.v082.i10.
Corresponding BibTeX entry:
@Article{, title = {{sparseHessianFD}: An {R} Package for Estimating Sparse Hessian Matrices}, author = {Michael Braun}, journal = {Journal of Statistical Software}, year = {2017}, volume = {82}, number = {10}, pages = {1--22}, doi = {10.18637/jss.v082.i10}, }