Cryptology ePrint Archive: BibTeX Citation of Report 2006/133

@misc{cryptoeprint:2006:133,
    author       = {Francisco Rodríguez-Henríquez and
		    Guillermo Morales-Luna and
		    Julio López-Hernández},
    title        = {Low Complexity Bit-Parallel Square Root Computation over GF($2^m$) for all Trinomials },
    howpublished = {Cryptology ePrint Archive, Report 2006/133},
    year         = {2006},
    note         = {\url{https://ia.cr/2006/133}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.