To cite the cobs package in publications use:
Ng PT, Maechler M (2020). COBS – Constrained B-splines (Sparse matrix based). R package version 1.3-4., https://CRAN.R-project.org/package=cobs.
Ng P, Maechler M (2007). “A Fast and Efficient Implementation of Qualitatively Constrained Quantile Smoothing Splines.” Statistical Modelling, 7(4), 315–328. http://smj.sagepub.com/content/7/4/315.abstract.
Corresponding BibTeX entries:
@Manual{, title = {COBS -- Constrained B-splines (Sparse matrix based)}, author = {Pin T. Ng and Martin Maechler}, year = {2020}, note = {R package version 1.3-4.}, url = {https://CRAN.R-project.org/package=cobs}, }
@Article{, title = {A Fast and Efficient Implementation of Qualitatively Constrained Quantile Smoothing Splines}, author = {Pin Ng and Martin Maechler}, year = {2007}, journal = {Statistical Modelling}, volume = {7}, number = {4}, pages = {315--328}, url = {http://smj.sagepub.com/content/7/4/315.abstract}, }