| article html file updated | 9 February 2020 01:57 CET | Update | https://www.mdpi.com/1422-0067/19/1/138 |
| article html file updated | 29 September 2019 16:01 CEST | Update | - |
| article html file updated | 2 May 2019 04:32 CEST | Update | - |
| article html file updated | 18 April 2019 02:36 CEST | Update | - |
| article html file updated | 28 March 2019 12:59 CET | Update | - |
| article html file updated | 2 February 2018 09:43 CET | Update | - |
| article html file updated | 4 January 2018 07:00 CET | Original file | - |
| article xml uploaded. | 4 January 2018 06:59 CET | Original file | https://www.mdpi.com/1422-0067/19/1/138/xml |
| article pdf uploaded. | 4 January 2018 06:59 CET | Version of Record | https://www.mdpi.com/1422-0067/19/1/138/pdf |
