Published in Nautilus, in 1986, in volume 100, pages 23-27
Published in Nautilus, in 1986, in volume 100, pages 39-46
Published in Nautilus, in 1986, in volume 100, pages 46-49
Published in Nautilus, in 1986, in volume 100, pages 78-84
Published in Nautilus, in 1986, in volume 100, pages 96-98
Published in Nautilus, in 1986, in volume 100, pages 98-101
Published in Nautilus, in 1986, in volume 100, pages 101-104
Published in Nautilus, in 1986, in volume 100, pages 112
Published in Nautilus, in 1986, in volume 100, pages 120-121
Published in Nautilus, in 1986, in volume 100, issue 1, pages 38
Published in Nautilus, in 1986, in volume 100, issue 2, pages 71-77