| article html file updated | 7 February 2020 21:27 CET | Update | https://www.mdpi.com/1422-0067/18/1/156 |
| article html file updated | 22 September 2019 21:16 CEST | Update | - |
| article html file updated | 4 May 2019 15:20 CEST | Update | - |
| article html file updated | 8 February 2017 11:05 CET | Update | - |
| article html file updated | 13 January 2017 12:00 CET | Original file | - |
| article xml uploaded. | 13 January 2017 11:58 CET | Update | https://www.mdpi.com/1422-0067/18/1/156/xml |
| article xml uploaded. | 13 January 2017 11:58 CET | Original file | - |
| article pdf uploaded. | 13 January 2017 11:58 CET | Version of Record | https://www.mdpi.com/1422-0067/18/1/156/pdf |
