Parallel Solution of Space Linear Systems. - John R. Gilbert; Hjálmtyr Hafsteinsson (SWAT, 1988)

Parallel Sparse Cholesky Factorization. - Hjálmtyr Hafsteinsson (1988)

Parallel symbolic factorization of sparse linear systems. - John R. Gilbert; Hjálmtyr Hafsteinsson (Parallel Comput., 1990)

Approximating Treewidth, Pathwidth, and Minimum Elimination Tree Height. - Hans L. Bodlaender; John R. Gilbert; Ton Kloks; Hjálmtyr Hafsteinsson (WG, 1991)

Solving Large Scale Linear Programming Problems Using an Interior Point Method on a Massively Parallel Simd Computer. - Hjálmtyr Hafsteinsson; Roni Levkovitz; Gautam Mitra (Parallel Algorithms Appl., 1994)

Approximating Treewidth, Pathwidth, Frontsize, and Shortest Elimination Tree. - Hans L. Bodlaender; John R. Gilbert; Hjálmtyr Hafsteinsson; Ton Kloks (J. Algorithms, 1995)

Efficient Sparse Cholesky Factorization on a Massively Parallel SIMD Computer. - Fredrik Manne; Hjálmtyr Hafsteinsson (SIAM J. Sci. Comput., 1995)

Accessibility of audio and tactile interfaces for young blind people performing everyday tasks. - Yayoi Shimomura; Ebba Thora Hvannberg; Hjálmtyr Hafsteinsson (Univers. Access Inf. Soc., 2010)

Haptic cues as a utility to perceive and recognise geometry. - Yayoi Shimomura; Ebba Thora Hvannberg; Hjálmtyr Hafsteinsson (Univers. Access Inf. Soc., 2013)