@article{Babai_1986,
    doi = {10.1080/00927878608823393},
    url = {https://doi.org/10.1080%2F00927878608823393},
    year = {1986},
    month = {jan},
    publisher = {Informa {UK} Limited},
    volume = {14},
    number = {9},
    pages = {1729--1736},
    author = {L{\'{a}}szl{\'{o}} Babai},
    title = {On the length of subgroup chains in the symmetric group},
    journal = {Communications in Algebra}
}

@article{Babai_1986, doi = {10.1080/00927878608823393}, url = {https://doi.org/10.1080%2F00927878608823393}, year = {1986}, month = {jan}, publisher = {Informa {UK} Limited}, volume = {14}, number = {9}, pages = {1729--1736}, author = {L{\'{a}}szl{\'{o}} Babai}, title = {On the length of subgroup chains in the symmetric group}, journal = {Communications in Algebra} }