| article html file updated | 8 February 2020 05:19 CET | Update | https://www.mdpi.com/2218-1997/3/2/43 |
| article html file updated | 24 September 2019 17:06 CEST | Update | N/A |
| article html file updated | 3 May 2019 23:03 CEST | Update | N/A |
| article html file updated | 30 June 2017 09:16 CEST | Update | N/A |
| article html file updated | 23 May 2017 03:51 CEST | Update | N/A |
| article html file updated | 16 May 2017 06:30 CEST | Update | N/A |
| article xml uploaded. | 16 May 2017 06:29 CEST | Update | https://www.mdpi.com/2218-1997/3/2/43/xml |
| article pdf uploaded. | 16 May 2017 06:29 CEST | Updated version of record | https://www.mdpi.com/2218-1997/3/2/43/pdf |
| article html file updated | 8 May 2017 11:25 CEST | Original file | N/A |
| article pdf uploaded. | 8 May 2017 11:24 CEST | Version of Record | https://www.mdpi.com/2218-1997/3/2/43/pdf-vor |
