Published in Gayana, in 2001, in volume 65, pages 137-148

Published in Gayana, in 2001, in volume 65, issue 2, pages 119-128

Published in Gayana, in 2001, in volume 65, issue 2, pages 193-210

Published in Gayana, in 2001, in volume 65, issue 2, pages 215-217