1. Modification of scattering waves and its importance for shock acceleration;Achterberg;Astron. Astrophys.,1983
2. Stochastic Fermi acceleration and origin of cosmic rays;Achterberg;Adv. Space Res.,1984
3. Two-fluid models of cosmic ray shock acceleration;Achterberg;Astron. Astrophys.,1984
4. Modification to shock fitting program;Acuna;J. Phys. Res.,1984
5. Solar wind disturbances in the outer heliosphere caused by successive solar flares from the same active region;Akasofu,1983