Published in Contributions In Science (Los Angeles), in 2001, in volume 486, pages 1-11

Published in Contributions In Science (Los Angeles), in 2001, in volume 489, pages 1-40

Published in Contributions In Science (Los Angeles), in 2001, in volume 490, pages 1-5

Published in Contributions In Science (Los Angeles), in 2001, in volume 491, pages 1-8