| article html file updated | 9 February 2020 05:46 CET | Update | https://www.mdpi.com/2220-9964/7/2/54 |
| article html file updated | 30 September 2019 14:16 CEST | Update | - |
| article html file updated | 1 May 2019 20:23 CEST | Update | - |
| article html file updated | 17 April 2019 19:26 CEST | Update | - |
| article html file updated | 28 March 2019 21:28 CET | Update | - |
| article html file updated | 14 March 2018 14:52 CET | Update | - |
| article html file updated | 7 February 2018 07:47 CET | Original file | - |
| article xml uploaded. | 7 February 2018 07:46 CET | Update | https://www.mdpi.com/2220-9964/7/2/54/xml |
| article xml uploaded. | 7 February 2018 07:46 CET | Original file | - |
| article pdf uploaded. | 7 February 2018 07:46 CET | Version of Record | https://www.mdpi.com/2220-9964/7/2/54/pdf |
