| article html file updated | 8 February 2020 07:27 CET | Update | https://www.mdpi.com/2227-7102/7/2/59 |
| article html file updated | 3 May 2019 19:01 CEST | Update | N/A |
| article html file updated | 27 October 2017 09:58 CEST | Update | N/A |
| article html file updated | 5 June 2017 04:09 CEST | Update | N/A |
| article xml uploaded. | 5 June 2017 04:08 CEST | Update | https://www.mdpi.com/2227-7102/7/2/59/xml |
| article pdf uploaded. | 5 June 2017 04:08 CEST | Updated version of record | https://www.mdpi.com/2227-7102/7/2/59/pdf |
| article html file updated | 4 June 2017 12:29 CEST | Original file | N/A |
| article pdf uploaded. | 4 June 2017 12:28 CEST | Version of Record | https://www.mdpi.com/2227-7102/7/2/59/pdf-vor |
