Makefile changed for multiple bibs

Makefile

@@ -1,4 +1,4 @@
-TEX_FILES=paper.tex paper.bib $(wildcard sections/*)
+TEX_FILES=paper.tex paperGourab.bib paperGokhan.bib $(wildcard sections/*)
 
 all: paper.pdf todo
 	@if [ `uname` = "Darwin" ] ; then open paper.pdf; fi

paper.tex

@@ -105,7 +105,7 @@ We thank Dr. Oliver Kennedy and Dr. Lukasz Ziarek for their support and guidance
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %%%%% References %%%%%
 
-\bibliography{paper}   %>>>> bibliography data in report.bib
+\bibliography{paperGokhan,paperGourab}   %>>>> bibliography data in report.bib
 \bibliographystyle{spiebib}   %>>>> makes bibtex use spiebib.bst
 
 \end{document} 

paperGokhan.bib

@@ -0,0 +1,11 @@
+%% report.bib - contains BiBtex input for bibliography
+
+@inproceedings{kul2016ettu,
+  title={Ettu: Analyzing Query Intents in Corporate Databases},
+  author={Kul, Gokhan and Luong, Duc and Xie, Ting and Coonan, Patrick and Chandola, Varun and Kennedy, Oliver and Upadhyaya, Shambhu},
+  booktitle={Proceedings of the 25th International Conference Companion on World Wide Web},
+  pages={463--466},
+  year={2016},
+  organization={International World Wide Web Conferences Steering Committee}
+}
+

preamble.tex

@@ -11,7 +11,8 @@
 \usepackage{subcaption}
 \usepackage{caption}
 \usepackage{amsmath}
-
+\usepackage{cite,color,xspace}
+\usepackage{latexsym}
 \usepackage{cite}
 \usepackage{hyperref}
 \usepackage{lipsum}
@@ -22,6 +23,8 @@
 \usepackage{etoolbox}
 \usepackage{varwidth}
 
+
+
 \usepackage{multirow}
 
 %%%%%% Package Configuration %%%%%%

sections/2a-clustering.tex

@@ -1,3 +1,3 @@
-To be written.
+To be written \cite{kul2016ettu}.
 
 \todo{Gokhan will fill this part.}