Published in Phegea, in 1998, in volume 26, pages 1-8

Published in Phegea, in 1998, in volume 26, issue 1, pages 29-30

Published in Phegea, in 1998, in volume 26, issue 2, pages 41-60

Published in Phegea, in 1998, in volume 26, issue 2, pages 61-67

Published in Phegea, in 1998, in volume 26, issue 2, pages 69-70

Published in Phegea, in 1998, in volume 26, issue 2, pages 71-75

Published in Phegea, in 1998, in volume 26, issue 2, pages 76-80

Published in Phegea, in 1998, in volume 26, issue 3, pages 81-83

Published in Phegea, in 1998, in volume 26, issue 3, pages 85-86

Published in Phegea, in 1998, in volume 26, issue 3, pages 87-102

Published in Phegea, in 1998, in volume 26, issue 3, pages 103-116

Published in Phegea, in 1998, in volume 26, issue 3, pages 117

Published in Phegea, in 1998, in volume 26, issue 3, pages 118-120

Published in Phegea, in 1998, in volume 26, issue 4, pages 121-122

Published in Phegea, in 1998, in volume 26, issue 4, pages 123-129

Published in Phegea, in 1998, in volume 26, issue 4, pages 131-139

Published in Phegea, in 1998, in volume 26, issue 4, pages 141-150

Published in Phegea, in 1998, in volume 26, issue 4, pages 151-154