Published in Contributions in Science, in 1959, in volume 27, pages 1-39

Published in Contributions in Science, in 1959, in volume 28, pages 1-11

Published in Contributions in Science, in 1959, in volume 29, pages 1-21

Published in Contributions in Science, in 1959, in volume 30, pages 1-16

Published in Contributions in Science, in 1959, in volume 31, pages 1-47

Published in Contributions in Science, in 1959, in volume 32, pages 1-19

Published in Contributions in Science, in 1959, in volume 33, pages 1-7

Published in Contributions in Science, in 1959, in volume 34, pages 1-4