@article{Igarashi_2001,
    doi = {10.1145/503502.503505},
    url = {https://doi.org/10.1145%2F503502.503505},
    year = {2001},
    month = {may},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {23},
    number = {3},
    pages = {396--450},
    author = {Atsushi Igarashi and Benjamin C. Pierce and Philip Wadler},
    title = {Featherweight Java},
    journal = {{ACM} Transactions on Programming Languages and Systems}
}

@article{Igarashi_2001, doi = {10.1145/503502.503505}, url = {https://doi.org/10.1145%2F503502.503505}, year = {2001}, month = {may}, publisher = {Association for Computing Machinery ({ACM})}, volume = {23}, number = {3}, pages = {396--450}, author = {Atsushi Igarashi and Benjamin C. Pierce and Philip Wadler}, title = {Featherweight Java}, journal = {{ACM} Transactions on Programming Languages and Systems} }