| article html file updated | 9 February 2020 00:59 CET | Update | https://www.mdpi.com/1422-0067/19/1/37 |
| article html file updated | 29 September 2019 10:32 CEST | Update | - |
| article html file updated | 2 May 2019 06:36 CEST | Update | - |
| article html file updated | 18 April 2019 04:32 CEST | Update | - |
| article html file updated | 28 March 2019 10:38 CET | Update | - |
| article html file updated | 2 February 2018 09:27 CET | Update | - |
| article html file updated | 23 December 2017 07:53 CET | Original file | - |
| article xml uploaded. | 23 December 2017 07:52 CET | Update | https://www.mdpi.com/1422-0067/19/1/37/xml |
| article xml uploaded. | 23 December 2017 07:52 CET | Original file | - |
| article pdf uploaded. | 23 December 2017 07:52 CET | Version of Record | https://www.mdpi.com/1422-0067/19/1/37/pdf |
