Manoel Lemos. Non-binary matroids having four non-binary elements. Ars Comb., 46, 1997.
@article{Lemos97, title = {Non-binary matroids having four non-binary elements}, author = {Manoel Lemos}, year = {1997}, researchr = {https://researchr.org/publication/Lemos97}, cites = {0}, citedby = {0}, journal = {Ars Comb.}, volume = {46}, }