Published in Compendium of Human Ecology Researches in the Philippines (2003)

Published in Newsbreak (2003)

Published in Manila Bulletin (2001)

Published in Manila Times (2001)

Published in Manila Times (2000)

Published in Manila Bulletin (2000)

Published in Manila Bulletin (2000)

Published in Manila Bulletin (2000)

Published in Journal on Environment, Energy and Minerals (1999)

Published 1998