| article html file updated | 7 February 2020 21:16 CET | Update | https://www.mdpi.com/1422-0067/18/1/138 |
| article html file updated | 22 September 2019 20:17 CEST | Update | - |
| article html file updated | 4 May 2019 15:46 CEST | Update | - |
| article html file updated | 8 February 2017 11:02 CET | Update | - |
| article html file updated | 11 January 2017 16:29 CET | Original file | - |
| article xml uploaded. | 11 January 2017 16:28 CET | Original file | https://www.mdpi.com/1422-0067/18/1/138/xml |
| article pdf uploaded. | 11 January 2017 16:28 CET | Version of Record | https://www.mdpi.com/1422-0067/18/1/138/pdf |
