| article html file updated | 7 February 2020 20:23 CET | Update | https://www.mdpi.com/1422-0067/18/1/42 |
| article html file updated | 22 September 2019 15:39 CEST | Update | - |
| article html file updated | 4 May 2019 17:39 CEST | Update | - |
| article html file updated | 8 February 2017 10:47 CET | Update | - |
| article html file updated | 27 December 2016 11:59 CET | Original file | - |
| article xml uploaded. | 27 December 2016 11:14 CET | Update | https://www.mdpi.com/1422-0067/18/1/42/xml |
| article xml uploaded. | 27 December 2016 11:14 CET | Original file | - |
| article pdf uploaded. | 27 December 2016 11:14 CET | Version of Record | https://www.mdpi.com/1422-0067/18/1/42/pdf |
