Published in Phegea, in 1999, in volume 27, issue 1, pages 1-24

Published in Phegea, in 1999, in volume 27, issue 1, pages 29-31

Published in Phegea, in 1999, in volume 27, issue 1, pages 33

Published in Phegea, in 1999, in volume 27, issue 3, pages 81-84

Published in Phegea, in 1999, in volume 27, issue 3, pages 85-91

Published in Phegea, in 1999, in volume 27, issue 3, pages 93-101

Published in Phegea, in 1999, in volume 27, issue 3, pages 103-113

Published in Phegea, in 1999, in volume 27, issue 3, pages 115-116

Published in Phegea, in 1999, in volume 27, issue 4, pages 117-121

Published in Phegea, in 1999, in volume 27, issue 4, pages 123-126

Published in Phegea, in 1999, in volume 27, issue 4, pages 127-140

Published in Phegea, in 1999, in volume 27, issue 4, pages 141-143

Published in Phegea, in 1999, in volume 27, issue 4, pages 145-146

Published in Phegea, in 1999, in volume 27, issue 4, pages 147-148