@article{Guerrieri_2021,<br/><span class="tab"></span> title={S-matrix bootstrap for effective field theories: massless pions},<br/><span class="tab"></span> volume={2021},<br/><span class="tab"></span> ISSN={1029-8479},<br/><span class="tab"></span> url={http://dx.doi.org/10.1007/jhep06(2021)088},<br/><span class="tab"></span> DOI={10.1007/jhep06(2021)088},<br/><span class="tab"></span> number={6},<br/><span class="tab"></span> journal={Journal of High Energy Physics},<br/><span class="tab"></span> publisher={Springer Science and Business Media LLC},<br/><span class="tab"></span> author={Guerrieri,<br/><span class="tab"></span> Andrea L. and Penedones,<br/><span class="tab"></span> João and Vieira,<br/><span class="tab"></span> Pedro},<br/><span class="tab"></span> year={2021},<br/><span class="tab"></span> month=jun }