To cite package ‘HARplus’ in publications use: Puangchit P (2025). _HARplus: Enhanced R Package for 'GEMPACK' .har and .sl4 Files_. R package version 1.0.1, , . A BibTeX entry for LaTeX users is @Manual{, title = {HARplus: Enhanced R Package for 'GEMPACK' .har and .sl4 Files}, author = {Pattawee Puangchit}, year = {2025}, note = {R package version 1.0.1, }, url = {https://github.com/bodysbobb/harplus}, }