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       a & b \\ \hline

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@article{rivero2001resistance,

title={Resistance to cold and heat stress: accumulation of phenolic compounds in tomato and watermelon plants},

author={Rivero, Rosa M and Ruiz, Juan M and Garc{\i}a, Pablo C and L{\'o}pez-Lefebre, Luis R and S{\'a}nchez, Esteban and Romero, Luis},

journal={Plant Science},

volume={160},

number={2},

pages={315--321},

year={2001},

publisher={Elsevier}

}

@article{gostout1992clinical,

title={The clinical and endoscopic spectrum of the watermelon stomach},

author={Gostout, Christopher J and Viggiano, Thomas R and Ahlquist, David A and Wang, Kenneth K and Larson, Mark V and Balm, Rita},

journal={Journal of clinical gastroenterology},

volume={15},

number={3},

pages={256--263},

year={1992},

publisher={LWW}

}

\end{document}