| article html file updated | 6 February 2020 07:00 CET | Update | https://www.mdpi.com/2218-1989/4/1/98 |
| article html file updated | 7 May 2019 19:13 CEST | Update | - |
| article html file updated | 21 March 2019 11:42 CET | Update | - |
| article html file updated | 19 August 2015 19:02 CEST | Update | - |
| article html file updated | 12 May 2014 15:29 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 15:29 CEST | Original file | https://www.mdpi.com/2218-1989/4/1/98/xml |
| article supplementary file uploaded. | 24 February 2014 16:16 CET | - | https://www.mdpi.com/2218-1989/4/1/98#supplementary |
| article supplementary file uploaded. | 7 February 2014 15:18 CET | - | https://www.mdpi.com/2218-1989/4/1/98#supplementary |
| article pdf uploaded. | 27 January 2014 17:16 CET | Version of Record | https://www.mdpi.com/2218-1989/4/1/98/pdf |
