Published in Philippine Daily Inquirer (1998)

Published in The Philippine Review of Business and Economics (1993)

Published in Philippine Review of Economics and Business (formerly The Philippine Review of Business and Economics) (1993)

Published in Manila Bulletin (1989)

Published in Manila Bulletin (1989)

Published in Manila Chronicle (1988)

Published in Manila Chronicle (1988)

Published in Manila Bulletin (1988)

Published in Manila Bulletin (1988)

Published 1988