| article html file updated | 7 February 2020 22:56 CET | Update | https://www.mdpi.com/1660-3397/15/2/32 |
| article html file updated | 23 September 2019 05:25 CEST | Update | - |
| article html file updated | 4 May 2019 12:11 CEST | Update | - |
| article html file updated | 2 March 2017 09:37 CET | Update | - |
| article html file updated | 13 February 2017 07:46 CET | Original file | - |
| article xml uploaded. | 13 February 2017 07:44 CET | Original file | https://www.mdpi.com/1660-3397/15/2/32/xml |
| article pdf uploaded. | 13 February 2017 07:44 CET | Updated version of record | https://www.mdpi.com/1660-3397/15/2/32/pdf |
| article pdf uploaded. | 8 February 2017 16:21 CET | Version of Record | https://www.mdpi.com/1660-3397/15/2/32/pdf-vor |
