Boerdijk, Arie Hendrik Vector representations of differential equations, their solutions and the derivatives thereof/ Arie Hendrik Boerdijk. - Delft: Waltman, [1951]. - 177, [2] p.: diagrs., 25 cm. Proefschrift--Delft. Bibliography: p. [176]-[178] LCCN: 51038493 Subjects--Topical Terms: Vector analysisDifferential equations. Dewey Class. No.: 515.35 / B672v