| article html file updated | 7 February 2020 18:44 CET | Update | https://www.mdpi.com/2220-9964/5/12/221 |
| article html file updated | 22 September 2019 07:24 CEST | Update | - |
| article html file updated | 4 May 2019 21:06 CEST | Update | - |
| article html file updated | 28 December 2016 10:38 CET | Update | - |
| article html file updated | 29 November 2016 04:19 CET | Original file | - |
| article xml uploaded. | 29 November 2016 04:18 CET | Update | https://www.mdpi.com/2220-9964/5/12/221/xml |
| article xml uploaded. | 29 November 2016 04:18 CET | Update | - |
| article xml uploaded. | 29 November 2016 04:18 CET | Update | - |
| article xml uploaded. | 29 November 2016 04:18 CET | Original file | - |
| article pdf uploaded. | 29 November 2016 04:18 CET | Version of Record | https://www.mdpi.com/2220-9964/5/12/221/pdf |
