Published in Discovery Reports, in 1955, in volume 27, pages 303-336

Created: 2011-11-15, modified: 2011-11-15

Published in Discovery Reports, in 1955, in volume 27, pages 377-395

Created: 2011-11-15, modified: 2012-04-06

Published in Discovery Reports, in 1955, in volume 28, pages 1-190

Created: 2011-11-15, modified: 2013-02-25