Published in Gardens' Bulletin, Singapore, in 2011, in volume 62, issue 2, pages 239-252

Created: 2014-06-21, modified: 2014-06-21

Published in Gardens' bulletin, Singapore, in 2009, in volume 61, issue 1, pages 29-44

Created: 2014-07-17, modified: 2014-07-17

Published in Gardens' Bulletin, Singapore, in 2011, in volume 63, issue 1, pages 83-96

Created: 2014-06-21, modified: 2014-06-21

Published in Gardens’ Bulletin Singapore, in 2016, in volume 68, issue 1, pages 77-86

Created: 2017-04-12, modified: 2017-04-12

Published in Gardens' Bulletin, Singapore, in 2013, in volume 65, issue 2, pages 135-142

Created: 2017-05-21, modified: 2017-05-21