\begin{thebibliography}{111} \label{references}
\baselineskip 17.8pt

\bibitem{api}%1
\sx{.54}{
\url{https://api.pageplace.de/preview/DT0400.9781439864548_A38306604/preview-9781439864548_A38306604.pdf}}
Frank W.J. Olver. Asymptotics and Special Functions. Copyright O 1997by A K Peters, Ltd.
\bibitem{DLMF}%2
\url{https://dlmf.nist.gov/2#PT1}
NIST Digital Library of Mathematical Functions. (observed in 2026)
Chapter 2 Asymptotic Approximations by
F. W. J. Olver and R. Wong

\bibitem{r}%3
\sx{.96}{\url{https://www.cataloxy.ru/books/31903338_superfunktsii.htm}}\\
%\sx{.78}{\href{https://www.morebooks.de/store/ru/book/Суперфункции/isbn/978-3-659-56202-0}{https://www.morebooks.de/store/ru/book/Суперфункции/isbn/978-3-659-56202-0}} \\
\url{https://mizugadro.mydns.jp/BOOK/202.pdf}
Дмитрий Кузнецов. Суперфункции. Lambert Academic Publishing, 2014

\bibitem{e}%4
\sx{.7}{\url{https://www.morebooks.de/store/gb/book/superfunctions/isbn/978-620-2-67286-3}}\\
\url{mizugadro.mydns.jp/BOOK/468.pdf} 
Dmitrii Kouznetsov. Superfunctions. Lambert Academic Publishing, 2020 

\bibitem{becklemishev}%5
\url{http://photo-element.ru/offtopic/logic.html}
Беклемишев Дмитрий Владимирович. Заметки о женской логике. МФТИ, 2013.

\bibitem{becklemishevE}%6
\url{https://mizugadro.mydns.jp/t/index.php/Female_logic}
D.Beklemishev. Female logic.

%\bibitem{DLMF}\url{https://dlmf.nist.gov} NIST Digital Library of Mathematical Functions.  

\bibitem{Stirling}%7
\sx{.6}{\url{https://archive.org/details/bim_eighteenth-century_methodus-differentialis_stirling-james-frs-_1730}}
J.~Stirling, \emph{Methodus Differentialis}, 1730.

\end{thebibliography}

Not numbered links

\url{https://en.wikipedia.org/wiki/Asymptotic_analysis}