O. Hartmann

Crater chains, double and multiple craters on the satellites of Saturn: morphology and stratigraphy

G. Neukum, R. Wagner, N. Schmedemann, 2010 .

Temporal Gravity Variations near Shrinking Vatnajökull Ice Cap, Iceland

I. Sasgen, L. Sjöberg, V. Klemann, 2009 .

Crustal Radioactivity and Motion as Causes of Regional Metamorphism in the Damara Orogen

U. Haack, E. Hoffer, O. Hartmann, 1983 .