\begin{thebibliography}{15}
\expandafter\ifx\csname natexlab\endcsname\relax\def\natexlab#1{#1}\fi
\expandafter\ifx\csname bibnamefont\endcsname\relax
  \def\bibnamefont#1{#1}\fi
\expandafter\ifx\csname bibfnamefont\endcsname\relax
  \def\bibfnamefont#1{#1}\fi
\expandafter\ifx\csname citenamefont\endcsname\relax
  \def\citenamefont#1{#1}\fi
\expandafter\ifx\csname url\endcsname\relax
  \def\url#1{\texttt{#1}}\fi
\expandafter\ifx\csname urlprefix\endcsname\relax\def\urlprefix{URL }\fi
\providecommand{\bibinfo}[2]{#2}
\providecommand{\eprint}[2][]{\url{#2}}

\bibitem[{\citenamefont{Beneke and Smirnov}(1998)}]{Beneke:1997zp}
\bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Beneke}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{V.~A.} \bibnamefont{Smirnov}},
  \bibinfo{journal}{Nucl. Phys.} \textbf{\bibinfo{volume}{B522}},
  \bibinfo{pages}{321} (\bibinfo{year}{1998}), \eprint{hep-ph/9711391}.

\bibitem[{\citenamefont{Smirnov}(1999)}]{Smirnov:1999bza}
\bibinfo{author}{\bibfnamefont{V.~A.} \bibnamefont{Smirnov}},
  \bibinfo{journal}{Phys. Lett.} \textbf{\bibinfo{volume}{B465}},
  \bibinfo{pages}{226} (\bibinfo{year}{1999}), \eprint{hep-ph/9907471}.

\bibitem[{\citenamefont{Chetyrkin}(1988{\natexlab{a}})}]{Chetyrkin:1988zz}
\bibinfo{author}{\bibfnamefont{K.~G.} \bibnamefont{Chetyrkin}},
  \bibinfo{journal}{Theor. Math. Phys.} \textbf{\bibinfo{volume}{75}},
  \bibinfo{pages}{346} (\bibinfo{year}{1988}{\natexlab{a}}).

\bibitem[{\citenamefont{Chetyrkin}(1988{\natexlab{b}})}]{Chetyrkin:1988cu}
\bibinfo{author}{\bibfnamefont{K.~G.} \bibnamefont{Chetyrkin}},
  \bibinfo{journal}{Theor. Math. Phys.} \textbf{\bibinfo{volume}{76}},
  \bibinfo{pages}{809} (\bibinfo{year}{1988}{\natexlab{b}}).

\bibitem[{\citenamefont{Tkachov}(1994)}]{Tkachov:1997gz}
\bibinfo{author}{\bibfnamefont{F.}~\bibnamefont{Tkachov}},
  \bibinfo{journal}{Sov. J. Part. Nucl.} \textbf{\bibinfo{volume}{25}},
  \bibinfo{pages}{649} (\bibinfo{year}{1994}).

\bibitem[{\citenamefont{Gorishny}(1989)}]{Gorishny:1989}
\bibinfo{author}{\bibfnamefont{S.~G.} \bibnamefont{Gorishny}},
  \bibinfo{journal}{Nucl. Phys.} \textbf{\bibinfo{volume}{B319}},
  \bibinfo{pages}{633} (\bibinfo{year}{1989}).

\bibitem[{\citenamefont{Smirnov}(1990)}]{Smirnov:1990rz}
\bibinfo{author}{\bibfnamefont{V.~A.} \bibnamefont{Smirnov}},
  \bibinfo{journal}{Commun. Math. Phys.} \textbf{\bibinfo{volume}{134}},
  \bibinfo{pages}{109} (\bibinfo{year}{1990}).

\bibitem[{\citenamefont{Seidensticker}(1999)}]{Seidensticker:1999bb}
\bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Seidensticker}}
  (\bibinfo{year}{1999}), \bibinfo{note}{hep-ph/9905298}.

\bibitem[{\citenamefont{Harlander et~al.}(1998)\citenamefont{Harlander,
  Seidensticker, and Steinhauser}}]{Harlander:1997zb}
\bibinfo{author}{\bibfnamefont{R.}~\bibnamefont{Harlander}},
  \bibinfo{author}{\bibfnamefont{T.}~\bibnamefont{Seidensticker}},
  \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Steinhauser}},
  \bibinfo{journal}{Phys. Lett.} \textbf{\bibinfo{volume}{B426}},
  \bibinfo{pages}{125} (\bibinfo{year}{1998}), \eprint{hep-ph/9712228}.

\bibitem[{\citenamefont{Smirnov}(2002)}]{Smirnov:2002pj}
\bibinfo{author}{\bibfnamefont{V.~A.} \bibnamefont{Smirnov}},
  \bibinfo{journal}{Springer Tracts Mod. Phys.} \textbf{\bibinfo{volume}{177}},
  \bibinfo{pages}{1} (\bibinfo{year}{2002}).

\bibitem[{\citenamefont{Smirnov and Tentyukov}(2009)}]{Smirnov:2008py}
\bibinfo{author}{\bibfnamefont{A.~V.} \bibnamefont{Smirnov}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{M.~N.} \bibnamefont{Tentyukov}},
  \bibinfo{journal}{Comput. Phys. Commun.} \textbf{\bibinfo{volume}{180}},
  \bibinfo{pages}{735} (\bibinfo{year}{2009}), \eprint{0807.4129}.

\bibitem[{\citenamefont{Smirnov et~al.}(2009)\citenamefont{Smirnov, Smirnov,
  and Tentyukov}}]{Smirnov:2009pb}
\bibinfo{author}{\bibfnamefont{A.~V.} \bibnamefont{Smirnov}},
  \bibinfo{author}{\bibfnamefont{V.~A.} \bibnamefont{Smirnov}},
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{M.}~\bibnamefont{Tentyukov}}
  (\bibinfo{year}{2009}), \eprint{0912.0158}.

\bibitem[{\citenamefont{Bogolyubov and Shirkov}(1959)}]{Bogolyubov:1980nc}
\bibinfo{author}{\bibfnamefont{N.~N.} \bibnamefont{Bogolyubov}}
  \bibnamefont{and} \bibinfo{author}{\bibfnamefont{D.~V.}
  \bibnamefont{Shirkov}}, vol.~\bibinfo{volume}{3} of
  \emph{\bibinfo{series}{Intersci. Monogr. Phys. Astron.}}
  (\bibinfo{publisher}{Interscience}, \bibinfo{address}{New York, USA},
  \bibinfo{year}{1959}).

\bibitem[{QHu()}]{QHull}
\bibinfo{note}{\lowercase{http://www.qhull.org}}.

\bibitem[{\citenamefont{Pak and Czarnecki}(2008)}]{Pak:2008cp}
\bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Pak}} \bibnamefont{and}
  \bibinfo{author}{\bibfnamefont{A.}~\bibnamefont{Czarnecki}},
  \bibinfo{journal}{Phys. Rev.} \textbf{\bibinfo{volume}{D78}},
  \bibinfo{pages}{114015} (\bibinfo{year}{2008}), \eprint{0808.3509}.

\end{thebibliography}
