\begin{thebibliography}{99}
\bibitem {TeDi04}
B. Terhal and D. DiVincenzo, Adaptive quantum computation, constant
depth quantum circuits
and Arthur-Merlin games,
{\it Quant. Inf. Comp.}
4 (2004), 134--145.
\end{thebibliography}
produces the error:
Use of uninitialized value in concatenation (.) or string at /usr/local/texlive/2017/texmf-dist/scripts/bibtexperllibs/BibTeX/Parser/Entry.pm line 229.
The following record:
produces the error: