| article html file updated | 9 February 2020 05:50 CET | Update | https://www.mdpi.com/2220-9964/7/2/56 |
| article html file updated | 30 September 2019 14:42 CEST | Update | N/A |
| article html file updated | 1 May 2019 20:13 CEST | Update | N/A |
| article html file updated | 17 April 2019 19:18 CEST | Update | N/A |
| article html file updated | 28 March 2019 21:38 CET | Update | N/A |
| article html file updated | 14 March 2018 14:53 CET | Update | N/A |
| article html file updated | 7 February 2018 12:39 CET | Original file | N/A |
| article xml uploaded. | 7 February 2018 12:38 CET | Original file | https://www.mdpi.com/2220-9964/7/2/56/xml |
| article pdf uploaded. | 7 February 2018 12:38 CET | Version of Record | https://www.mdpi.com/2220-9964/7/2/56/pdf |
