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:

Achim Zeileis, Friedrich Leisch, Kurt Hornik and Christian Kleiber (2002). strucchange: An R Package for Testing for Structural Change in Linear Regression Models. Journal of Statistical Software, 7(2), 1-38. URL http://www.jstatsoft.org/v07/i02/

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

Achim Zeileis, Christian Kleiber, Walter Kraemer and Kurt Hornik (2003). Testing and Dating of Structural Changes in Practice. Computational Statistics & Data Analysis, 44, 109-123.

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

Achim Zeileis (2006). Implementing a Class of Structural Change Tests: An Econometric Computing Approach. Computational Statistics & Data Analysis, 50, 2987-3008.

Corresponding BibTeX entries:

@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}, url = {http://www.jstatsoft.org/v07/i02/}, }

@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}, pages = {109--123}, }

@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}, pages = {2987--3008}, }