| article html file updated | 9 February 2020 06:50 CET | Update | https://www.mdpi.com/2077-1444/9/2/61 |
| article html file updated | 1 May 2019 18:01 CEST | Update | - |
| article html file updated | 17 April 2019 17:21 CEST | Update | - |
| article html file updated | 28 March 2019 23:44 CET | Update | - |
| article html file updated | 14 March 2018 15:13 CET | Update | - |
| article html file updated | 22 February 2018 13:07 CET | Original file | - |
| article xml uploaded. | 22 February 2018 13:06 CET | Original file | https://www.mdpi.com/2077-1444/9/2/61/xml |
| article pdf uploaded. | 22 February 2018 13:06 CET | Updated version of record | https://www.mdpi.com/2077-1444/9/2/61/pdf |
| article pdf uploaded. | 16 February 2018 05:48 CET | Version of Record | https://www.mdpi.com/2077-1444/9/2/61/pdf-vor |
