Publications in collaboration with researchers from Universidade Nova de Lisboa (3)

2014

  1. A study of associations of occupational accidents to number of employees, and to hours worked

    OCCUPATIONAL SAFETY AND HYGIENE II

2007

  1. The starshaped condition on Ding's version of the Poincaré-Birkhoff theorem

    Bulletin of the London Mathematical Society, Vol. 39, Núm. 5, pp. 803-810

2004

  1. A note on a modified version of the Poincaré-Birkhoff theorem

    Journal of Differential Equations, Vol. 203, Núm. 1, pp. 55-63