Matroids Having Small Circumference. - Braulio Maia Jr.; Manoel Lemos (Comb. Probab. Comput., 2001)

Connected matroids with a small circumference. - Braulio Maia Jr. (Discret. Math., 2002)

Removing circuits in 3-connected binary matroids. - Raul Cordovil; Braulio Maia Jr.; Manoel Lemos (Discret. Math., 2009)

The 3-connected binary matroids with circumference 6 or 7. - Raul Cordovil; Braulio Maia Jr.; Manoel Lemos (Eur. J. Comb., 2009)