To cite package ‘survdt’ in publications use:

  Vazquez O (2026). _survdt: Improved Methods for Survival Analysis
  under Double Truncation_. R package version 0.9.0.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {survdt: Improved Methods for Survival Analysis under Double Truncation},
    author = {Omar Vazquez},
    year = {2026},
    note = {R package version 0.9.0},
  }

  Vazquez O, Xie SX (2025). “Robust inverse probability weighted
  estimators for doubly truncated Cox regression with closed-form
  standard errors.” _Lifetime Data Analysis_.
  doi:10.1007/s10985-025-09650-5
  <https://doi.org/10.1007/s10985-025-09650-5>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Robust inverse probability weighted estimators for doubly truncated Cox regression with closed-form standard errors},
    author = {Omar Vazquez and Sharon X. Xie},
    journal = {Lifetime Data Analysis},
    year = {2025},
    doi = {10.1007/s10985-025-09650-5},
  }