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\begin{document}
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\begin{LTRbibitems}
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\bibitem{GD}
 P. Adams, D. Bryant, and  M. Buchanan, A Survey on the Existence of $G-$Designs, J. of Combin. Des., 16 (2008), 373-410.

\bibitem{ink4}
 E.J. Billington,  M. Gionfriddo, and C.C. Lindner, The intersection problem for $(K_4-e)-$designs, J. Stat. Planning and Inference, 58 (1997), 5–27.
\end{thebibliography}
\begin{latin}
\chapter*{Abstract}
Some text 1234 $K_4$
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\end{document}