| article html file updated | 8 February 2020 07:17 CET | Update | https://www.mdpi.com/2309-608X/3/2/28 |
| article html file updated | 25 September 2019 03:17 CEST | Update | - |
| article html file updated | 3 May 2019 19:20 CEST | Update | - |
| article html file updated | 11 December 2018 08:55 CET | Update | - |
| article html file updated | 5 June 2017 12:28 CEST | Original file | - |
| article xml uploaded. | 5 June 2017 12:27 CEST | Update | https://www.mdpi.com/2309-608X/3/2/28/xml |
| article pdf uploaded. | 5 June 2017 12:27 CEST | Updated version of record | https://www.mdpi.com/2309-608X/3/2/28/pdf |
