For adding references to your paper in Latex, there are two ways :

1. Using \begin{bibliography}: We add the References section always after the Conclusion section, at the end of the paper. We add each reference as a \bibitem, containing the name of a label(here, ref_lncs1). In order to mention this reference in the paper, we write: \cite{ref_lncs1}
\begin{bibliography}
\bibitem{ref_lncs1}
Author, F., Author, S.: Title of a proceedings paper. In: Editor, F., Editor, S. (eds.) CONFERENCE 2016, LNCS, vol. 9999, pp. 1--13. Springer, Heidelberg (2016). \doi{10.10007/1234567890}
\end{bibliography}


2. Using BibTex :

\bibliography{file_name_bib}
\bibliographystyle{file_name_bst}


3. Adding footnotes : In case of a 2-column format, this will appear at the bottom of your column, separated by a line in case. In case of a single column format like Springer llcns it will appear at the bottom of your page, separated by a single line.

To add a footnote inside the text, you use the command :

\footnote{text_content1}

. This “text_content1” is usually an url, particularly a Github repo link.

4. Adding references inside text : To cite a paper, we write :

\ref{ref_lncs1}

as shown in  the code of point 1.

5. Referencing tables and figures :

We use the \label tag to assign the name to the entity(maybe a table, figure or even a section), by which it will be called or referenced in different parts of the document. Let us for example consider the following templates, one for a table and second for a figure. Both of them make use of the \label tag.

a) Table :


\begin{table}
\centering
\caption{Classifier performance results}
\label{table:classificationresults}
\begin{tabular}{|c|c|} \hline
Features (and Models)&Accuracy (in \%)\\ \hline
Baseline 1 (Linear SVM using n-grams)& 59.3\\
Baseline 2 & 64.1\\
Our approach(lexicon based) & 68.4\\
Ensemble SVM model (Optimal) & 69.7\\
\hline\end{tabular}
\end{table}



b) Figure :  I will later write an article on how to programmatically create Latex pictures using tikzpicture .

 \begin{figure} \centering \includegraphics[width=\textwidth]{image_filename} \caption{Workflow of our proposed methodology} \label{fig:workflow} \end{figure}

c) Sections, subsections :


\section{Introduction}\label{introduction}



Here, instead of \cite which  we previously showed for referencing bibliographic references, we will now use \ref to mention or reference a table, figure or section.

a) We show the performance of the classifier across different feature sets in Table \ref{table:classificationresults}.

b) In Figure \ref{fig:workflow}, we provide the detailed workflow of our proposed methodology.

c) We motivate and outline the research challenges and the key contributions of this paper in Section \ref{introduction}.