Published in Philippine Journal of Science (2007)

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (2004)

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (2003)

Published in Manila Bulletin (2002)

Published 2001

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (2001)

Published 2000

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (2000)

Published 2000

Published 1998