Published in Contributions in Science, in 1958, in volume 19, pages 1-4

Published in Contributions in Science, in 1958, in volume 20, pages 1-15

Published in Contributions in Science, in 1958, in volume 21, pages 1-31

Published in Contributions in Science, in 1958, in volume 22, pages 1-11

Published in Contributions in Science, in 1958, in volume 23, pages 1-12

Published in Contributions in Science, in 1958, in volume 24, pages 1-7

Published in Contributions in Science, in 1958, in volume 25, pages 1-15

Published in Contributions in Science, in 1958, in volume 26, pages 1-2