The multiple slope discontinuity beam element for nonlinear analysis of RC framed structures, M. Hajidehi, Rezaee, Spada A., and Giambanco G. , Meccanica, Volume 53, Number 6, p.1469-1490, (2018)

Four-dimensional variational assimilation in the unstable subspace and the optimal subspace dimension, Trevisan, A., D'Isidoro Massimo, and Talagrand O. , Quarterly Journal of the Royal Meteorological Society, Volume 136, Number 647, p.487-496, (2010)