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Journal of Theoretical Biology|June 21, 1997
A biased random walk model for the trajectories of swimming micro-organismsN A Hill, D P HaderCurrent Microbiology|September 1, 1990
Motility and gravitactic orientation of the flagellate, Euglena gracilis, impaired by artificial and solar UV-B radiationD P Hader, S M LiuThe Journal of Experimental Biology|October 1, 1996
Graviresponses in Paramecium biaurelia under different accelerations: studies on the ground and in spaceR Hemmersbach, R Voormanns, D P HaderMicrogravity Science and Technology|September 1, 1990
Responses of the photosynthetic flagellate, Euglena gracilis, to microgravityD P Hader, K Vogel, J SchaferJournal of Plant Physiology|September 7, 2001
Graviorientation in protists and plantsR Hemmersbach, D Volkmann, D P HaderPlant & Cell Physiology|July 1, 1988
Diaphototaxis and gravitaxis in a freshwater CryptomonasE Rhiel, D P Hader, W WehrmeyerCurrent Microbiology|March 1, 1991
Orientation of the photosynthetic flagellate, Peridinium gatunense, in hypergravityD P Hader, S M Liu, K KreuzbergJournal of Plant Physiology|July 1, 1995
Gravitaxis in the flagellate Euglena gracilis is controlled by an active gravireceptorD P Hader, A Rosum, J Schafer, et al.European Biophysics Journal : EBJ|August 1, 1991
Responses of the photosynthetic flagellate, Euglena gracilis, to hypergravityD P Hader, E Reinecke, K Vogel, et al.Microgravity Science and Technology|September 1, 1993
Phototaxis in the flagellate, Euglena gracilis, under the effect of microgravityC h Kuhnel-Kratz, J Schafer, D P HaderPageof 72