@incollection{Gaboardi,
    doi = {10.1007/978-3-540-74915-8_21},
    url = {https://doi.org/10.1007%2F978-3-540-74915-8_21},
    publisher = {Springer Berlin Heidelberg},
    pages = {253--267},
    author = {Marco Gaboardi and Simona Ronchi Della Rocca},
    title = {A Soft Type Assignment System for {$\lambda$}-Calculus},
    booktitle = {Computer Science Logic}
}

@incollection{Gaboardi, doi = {10.1007/978-3-540-74915-8_21}, url = {https://doi.org/10.1007%2F978-3-540-74915-8_21}, publisher = {Springer Berlin Heidelberg}, pages = {253--267}, author = {Marco Gaboardi and Simona Ronchi Della Rocca}, title = {A Soft Type Assignment System for {$\lambda$}-Calculus}, booktitle = {Computer Science Logic} }