| article html file updated | 6 February 2020 05:17 CET | Update | https://www.mdpi.com/2218-1989/3/4/993 |
| article html file updated | 7 May 2019 22:38 CEST | Update | - |
| article html file updated | 21 March 2019 06:57 CET | Update | - |
| article html file updated | 18 March 2014 09:54 CET | Original file | - |
| article xml file uploaded | 18 March 2014 09:54 CET | Original file | https://www.mdpi.com/2218-1989/3/4/993/xml |
| article supplementary file uploaded. | 1 November 2013 14:36 CET | - | https://www.mdpi.com/2218-1989/3/4/993#supplementary |
| article pdf uploaded. | 1 November 2013 14:31 CET | Updated version of record | https://www.mdpi.com/2218-1989/3/4/993/pdf |
| article supplementary file uploaded. | 31 October 2013 13:36 CET | - | https://www.mdpi.com/2218-1989/3/4/993#supplementary |
| article pdf uploaded. | 31 October 2013 13:36 CET | Version of Record | - |
