@inbook{inbook, title  = {{Left Fibrations and the Covariant Model}},

 publisher = {{Springer International Publishing}},

 url = {{https://doi.org/10.1007/978-3-031-10447-3_13 }},

 year = {{2022}},

 month = {{1}},

 author = {{Heuts G and Moerdijk I}},

 doi = {{10.1007/978-3-031-10447-3_13}},

 isbn = {{9783031104466}},

 pages = {{523-553}},

 note = {{Accessed on 2025/10/10}}}