| article html file updated | 8 February 2020 23:03 CET | Update | https://www.mdpi.com/2304-8158/6/12/108 |
| article html file updated | 28 September 2019 23:22 CEST | Update | N/A |
| article html file updated | 2 May 2019 10:49 CEST | Update | N/A |
| article html file updated | 18 April 2019 08:26 CEST | Update | N/A |
| article html file updated | 2 January 2018 18:12 CET | Update | N/A |
| article html file updated | 5 December 2017 10:49 CET | Update | N/A |
| article xml uploaded. | 5 December 2017 10:48 CET | Update | https://www.mdpi.com/2304-8158/6/12/108/xml |
| article pdf uploaded. | 5 December 2017 10:48 CET | Updated version of record | https://www.mdpi.com/2304-8158/6/12/108/pdf |
| article html file updated | 4 December 2017 12:24 CET | Original file | N/A |
| article xml uploaded. | 4 December 2017 12:23 CET | Original file | N/A |
| article pdf uploaded. | 4 December 2017 12:23 CET | Version of Record | N/A |
