Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 9-34

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 35-44

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 45-48

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 49-58

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 59-80

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 81-92

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 93-98

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 99-108

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 109-116

Published in Revista De La Academia Canaria De Ciencias, in 2009, in volume 21, issue 3, pages 117-132