Published in Contributions In Science (Los Angeles), in 1998, in volume 469, pages 1-10

Published in Contributions In Science (Los Angeles), in 1998, in volume 470, pages 1-63

Published in Contributions In Science (Los Angeles), in 1998, in volume 471, pages 1-13

Published in Contributions In Science (Los Angeles), in 1998, in volume 472, pages 1-17

Published in Contributions in Science (Los Angeles), in 1998, in volume 473, pages 1-43

Published in Contributions In Science (Los Angeles), in 1998, in volume 474, pages 1-27

Published in Contributions In Science (Los Angeles), in 1998, in volume 475, pages 1-32

Published in Contributions in Science (Los Angeles), in 1998, in volume 476, pages 1-79