@article{calteches4106,
          volume = {67},
          number = {1},
           month = {Unspecified},
          author = {Tom M. Apostol},
         address = {Pasadena, CA},
           title = {The Tunnel of Samos},
       publisher = {California Institute of Technology},
            year = {2004},
         journal = {Engineering and Science},
           pages = {30--40},
        keywords = {History},
             url = {https://resolver.caltech.edu/CaltechES:67.1.Samos},
        abstract = {A new theory on how the ancient Greeks dug a two-sided tunnel through a mountain and met up perfectly in the middle.}
}