1. On the Microseismic Movement recorded in Greenland and its Relation to Atmospheric Disturbances;LEHMANN;Pont. Ac. Sci. Scr. Var.,1952
2. On the Beat Distribution in Group Microseisms;JENSEN;Geod. Inst. Medd.,1957
3. A Procedure for the Determination of Direction of Approach of Microseismic Waves;JENSEN;Geod. Inst. Medd.,1958
4. Daily Determinations of the Microseismic Direction in København during the IGY 1958;JENSEN;Geod. Inst. Medd.,1959
5. JENSEN, H., 1959. Routine Determinations of Microseismic Directions. Paper presented in Alicante at the Fifth Assembly of the Comm. Seism. Europ.