W. F. Ewald

CHEMICAL STIMULATION OF NERVES

J. Loeb, W. F. Ewald, 1916 .

On artificial modification of light reactions and the influence of electrolytes on phototaxis

W. F. Ewald, 1912 .

THE APPLICABILITY OF THE PHOTOCHEMICAL ENERGY-LAW TO LIGHT REACTIONS IN ANIMALS.

W. F. Ewald, 1913, Science.