Published in Phegea, in 2003, in volume 31, issue 3, pages 81-86

Published in Phegea, in 2003, in volume 31, issue 3, pages 87-90

Published in Phegea, in 2003, in volume 31, issue 3, pages 91-120

Published in Phegea, in 2003, in volume 31, issue 4, pages 161-166

Published in Phegea, in 2003, in volume 31, issue 4, pages 167-181

Published in Phegea, in 2003, in volume 31, issue 4, pages 183-193

Published in Phegea, in 2003, in volume 31, issue 4, pages 195-196

Published in Phegea, in 2003, in volume 31, issue 4, pages 197-198