@article{Sloan2003gas,
  author = {Sloan},
  title = {Fundamental principles and applications of natural gas hydrates},
  journal = {Nature},
  year = {2003},
  doi = {10.1038/nature02135},
  url = {https://doi.org/10.1038/nature02135}
}

@article{Boetius2000microbes,
  author = {Boetius and Ravenschlag and Schubert and others},
  title = {A marine microbial consortium apparently mediating anaerobic oxidation of methane},
  journal = {Nature},
  year = {2000},
  doi = {10.1038/35036572},
  url = {https://doi.org/10.1038/35036572}
}

@article{Howarth2011methane,
  author = {Howarth and Santoro and Ingraffea},
  title = {Methane and the greenhouse-gas footprint of natural gas from shale formations},
  journal = {Climatic Change},
  year = {2011},
  doi = {10.1007/s10584-011-0061-5},
  url = {https://doi.org/10.1007/s10584-011-0061-5}
}