To cite package ‘ppweibull’ in publications use: Gallardo D, Gomez Y, Gomez H, Arnold B (2026). _ppweibull: Piecewise Lifetime Models_. R package version 1.0, . A BibTeX entry for LaTeX users is @Manual{, title = {ppweibull: Piecewise Lifetime Models}, author = {Diego Gallardo and Yolanda Gomez and Hector Gomez and Barry Arnold}, year = {2026}, note = {R package version 1.0}, url = {https://CRAN.R-project.org/package=ppweibull}, }