| article html file updated | 8 February 2020 08:25 CET | Update | https://www.mdpi.com/2227-7102/7/2/64 |
| article html file updated | 25 September 2019 09:11 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:12 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:58 CEST | Update | N/A |
| article pdf uploaded. | 16 June 2017 09:20 CEST | Updated version of record | https://www.mdpi.com/2227-7102/7/2/64/pdf |
| article html file updated | 15 June 2017 15:09 CEST | Original file | N/A |
| article xml uploaded. | 15 June 2017 15:07 CEST | Original file | https://www.mdpi.com/2227-7102/7/2/64/xml |
| article pdf uploaded. | 15 June 2017 15:07 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/2/64/pdf-vor |
