Yves Edel, Jürgen Bierbrauer. 41 is the Largest Size of a Cap in PG(4, 4). Des. Codes Cryptography, 16(2):151-160, 1999.
@article{EdelB99:0, title = {41 is the Largest Size of a Cap in PG(4, 4)}, author = {Yves Edel and Jürgen Bierbrauer}, year = {1999}, researchr = {https://researchr.org/publication/EdelB99%3A0}, cites = {0}, citedby = {0}, journal = {Des. Codes Cryptography}, volume = {16}, number = {2}, pages = {151-160}, }