Verheest, Frank; Leroy, Oswald General vector solution of the differential equation describing the motion of a heavy particle near the surface of the earth. (English) Zbl 0305.70006 Simon Stevin 46(1972-73), 153-157 (1973). MSC: 70F99 70F05 PDFBibTeX XMLCite \textit{F. Verheest} and \textit{O. Leroy}, Simon Stevin 46, 153--157 (1973; Zbl 0305.70006)
Leroy, Oswald A note on the general solution of the system of differential equations describing the motion of a heavy particle near the surface of the earth. (English) Zbl 0254.70002 Simon Stevin 46(1972-73), 27-32 (1972). MSC: 70F99 PDFBibTeX XMLCite \textit{O. Leroy}, Simon Stevin 46, 27--32 (1972; Zbl 0254.70002)
Leroy, O. On the diffraction of light by superposed supersonic waves, consisting of a fundamental tone and its second harmonic. (English) Zbl 0165.44702 Simon Stevin 42 (1968/69), 3-42 (1968). PDFBibTeX XMLCite \textit{O. Leroy}, Simon Stevin 42, 3--42 (1968; Zbl 0165.44702)