A finite element Poisson solver for gyrokinetic particle simulations in a global field aligned mesh. - Yasutaro Nishimura; Zhihong Lin; J. L. V. Lewandowski; Stéphane Ethier (J. Comput. Phys., 2006)

A perturbation method for guiding center orbit following calculations in the presence of Coulomb collisions. - Yasutaro Nishimura (Comput. Phys. Commun., 2011)