| article html file updated | 23 February 2021 07:26 CET | Update | https://www.mdpi.com/2079-3200/3/2/46 |
| article html file updated | 6 February 2020 18:57 CET | Update | N/A |
| article html file updated | 20 September 2019 21:49 CEST | Update | N/A |
| article html file updated | 6 May 2019 19:21 CEST | Update | N/A |
| article html file updated | 26 March 2019 03:20 CET | Original file | N/A |
| article pdf uploaded. | 25 May 2015 11:17 CEST | Updated version of record | https://www.mdpi.com/2079-3200/3/2/46/pdf |
| article pdf uploaded. | 25 May 2015 11:16 CEST | Updated version of record | N/A |
| article pdf uploaded. | 25 May 2015 10:58 CEST | Updated version of record | N/A |
