| article html file updated | 8 February 2020 12:47 CET | Update | https://www.mdpi.com/2220-9964/6/8/234 |
| article html file updated | 26 September 2019 08:43 CEST | Update | - |
| article html file updated | 3 May 2019 08:28 CEST | Update | - |
| article html file updated | 27 March 2019 19:16 CET | Update | - |
| article html file updated | 1 September 2017 07:14 CEST | Update | - |
| article html file updated | 4 August 2017 15:51 CEST | Original file | - |
| article xml uploaded. | 4 August 2017 15:50 CEST | Original file | https://www.mdpi.com/2220-9964/6/8/234/xml |
| article pdf uploaded. | 4 August 2017 15:50 CEST | Updated version of record | https://www.mdpi.com/2220-9964/6/8/234/pdf |
