Vessiot, E. Sur la reflexion et la refraction des ondes et des rayons. (French) Zbl 0013.02003 J. Math. Pures Appl., IX. Sér. 14, 309-345 (1935). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Keywords:Differential equations, potential theory × Cite Format Result Cite Review PDF