@inbook{inbook, title  = {{A Modular First Formalisation of Combinatorial Design Theory}},

 publisher = {{Springer International Publishing}},

 url = {{http://dx.doi.org/10.1007/978-3-030-81097-9_1 }},

 year = {{2021}},

 month = {{1}},

 author = {{Edmonds C and Paulson LC}},

 doi = {{10.1007/978-3-030-81097-9_1}},

 isbn = {{9783030810962}},

 pages = {{3-18}},

 note = {{Accessed on 2024/12/23}}}