A projected conjugate gradient method for sparse minimax problems. - Kristján Jónasson (Numer. Algorithms, 1993)

Algorithm 878: Exact VARMA likelihood and its gradient for complete and incomplete data with Matlab. - Kristjan Jonasson (ACM Trans. Math. Softw., 2008)

Evaluating exact VARMA likelihood and its gradient when data are incomplete. - Kristjan Jonasson; Sebastian E. Ferrando (ACM Trans. Math. Softw., 2008)

Algorithm 892: DISPMODULE, a Fortran 95 module for pretty-printing matrices. - Kristjan Jonasson (ACM Trans. Math. Softw., 2009)

An empirical study of software architectures' effect on product quality. - Klaus Marius Hansen; Kristjan Jonasson; Helmut Neukirchen (J. Syst. Softw., 2011)

Smart data analytics methods for remote sensing applications. - Gabriele Cavallaro; Morris Riedel; Jón Atli Benediktsson; Markus Götz; Tomas Runarsson; Kristjan Jonasson; Thomas Lippert (IGARSS, 2014)

The exact Gaussian likelihood estimation of time-dependent VARMA models. - Abdelkamel Alj; Kristján Jónasson; Guy Mélard (Comput. Stat. Data Anal., 2016)

Algorithm 1005: Fortran Subroutines for Reverse Mode Algorithmic Differentiation of BLAS Matrix Operations. - Kristjan Jonasson; Sven Sigurdsson; Hordur Freyr Yngvason; Petur Orri Ragnarsson; Páll Melsted (ACM Trans. Math. Softw., 2020)