@article{aad2020combinationa,
  author = {Aad, G. and Abbott, B. and Abbott, D. C. and Abud, A. and Ali, B. and Augsten, K. and Bergmann, B. and Havr{\'a}nek, M. and Hub{\'a}{\v{c}}ek, Z. and My{\v{s}}ka, M. and Novotn{\'y}, R. and Posp{\'i}{\v{s}}il, S. and Smolek, K. and Sopczak, A. and Vacek, V. and Vok{\'a}{\v{c}}, P. and Vrba, V. and others},
  title = {Combination of searches for Higgs boson pairs in pp collisions at root s=13 {TeV} with the {ATLAS} detector},
  journal = {Physics Letters B},
  publisher = {Elsevier BV},
  volume = {800},
  pages = {135103},
  year = {2020},
  doi = {10.1016/j.physletb.2019.135103},
  issn = {0370-2693}
}