| article html file updated | 9 February 2020 05:54 CET | Update | https://www.mdpi.com/1422-0067/19/2/506 |
| article html file updated | 30 September 2019 15:04 CEST | Update | - |
| article html file updated | 1 May 2019 20:04 CEST | Update | - |
| article html file updated | 17 April 2019 19:10 CEST | Update | - |
| article html file updated | 28 March 2019 21:47 CET | Update | - |
| article html file updated | 14 March 2018 18:55 CET | Update | - |
| article html file updated | 8 February 2018 07:34 CET | Original file | - |
| article xml uploaded. | 8 February 2018 07:33 CET | Update | https://www.mdpi.com/1422-0067/19/2/506/xml |
| article xml uploaded. | 8 February 2018 07:33 CET | Original file | - |
| article pdf uploaded. | 8 February 2018 07:33 CET | Version of Record | https://www.mdpi.com/1422-0067/19/2/506/pdf |
