Published in Phegea, in 2007, in volume 35, issue 1, pages 21-26

Published in Phegea, in 2007, in volume 35, issue 1, pages 27-29

Published in Phegea, in 2007, in volume 35, issue 1, pages 35-36

Published in Phegea, in 2007, in volume 35, issue 1, pages 37-39

Published in Phegea, in 2007, in volume 35, issue 2, pages 41-53

Published in Phegea, in 2007, in volume 35, issue 3, pages 81-84

Published in Phegea, in 2007, in volume 35, issue 3, pages 85-91

Published in Phegea, in 2007, in volume 35, issue 3, pages 93-115

Published in Phegea, in 2007, in volume 35, issue 3, pages 117-119

Published in Phegea, in 2007, in volume 35, issue 4, pages 135-140

Published in Phegea, in 2007, in volume 35, issue 4, pages 141-143

Published in Phegea, in 2007, in volume 35, issue 4, pages 144-146

Published in Phegea, in 2007, in volume 35, issue 4, pages 147-159