There are several publications about strucchange which describe
different aspects of the software. The main reference is the JSS paper.

To cite strucchange in publications use:

  Zeileis A, Leisch F, Hornik K, Kleiber C (2002). “strucchange: An R
  Package for Testing for Structural Change in Linear Regression
  Models.” _Journal of Statistical Software_, *7*(2), 1-38.
  doi:10.18637/jss.v007.i02 <https://doi.org/10.18637/jss.v007.i02>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {strucchange: An R Package for Testing for Structural Change in Linear Regression Models},
    author = {Achim Zeileis and Friedrich Leisch and Kurt Hornik and Christian Kleiber},
    journal = {Journal of Statistical Software},
    year = {2002},
    volume = {7},
    number = {2},
    pages = {1--38},
    doi = {10.18637/jss.v007.i02},
  }

If methods related to breakpoints() are used also cite:

  Zeileis A, Kleiber C, Krämer W, Hornik K (2003). “Testing and Dating
  of Structural Changes in Practice.” _Computational Statistics & Data
  Analysis_, *44*(1-2), 109-123. doi:10.1016/S0167-9473(03)00030-6
  <https://doi.org/10.1016/S0167-9473%2803%2900030-6>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Testing and Dating of Structural Changes in Practice},
    author = {Achim Zeileis and Christian Kleiber and Walter Kr\"amer and Kurt Hornik},
    journal = {Computational Statistics \& Data Analysis},
    year = {2003},
    volume = {44},
    number = {1--2},
    pages = {109--123},
    doi = {10.1016/S0167-9473(03)00030-6},
  }

If methods related to gefp() and efpFunctional() are used also cite:

  Zeileis A (2006). “Implementing a Class of Structural Change Tests:
  An Econometric Computing Approach.” _Computational Statistics & Data
  Analysis_, *50*(11), 2987-3008. doi:10.1016/j.csda.2005.07.001
  <https://doi.org/10.1016/j.csda.2005.07.001>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Implementing a Class of Structural Change Tests: An Econometric Computing Approach},
    author = {Achim Zeileis},
    journal = {Computational Statistics \& Data Analysis},
    year = {2006},
    volume = {50},
    number = {11},
    pages = {2987--3008},
    doi = {10.1016/j.csda.2005.07.001},
  }