MAGNUSSON, L B The first isolation of element 93 in pure compounds and a determination of the half-life of 93Np237. [electronic resource] - Journal of the American Chemical Society Nov 1948 - 3534-8 p. digital Publication Type: Journal Article ISSN: 0002-7863 Standard No.: 10.1021/ja01191a002 doi Subjects--Topical Terms: Half-Life