| article html file updated | 8 February 2020 20:06 CET | Update | https://www.mdpi.com/2311-5521/2/4/59 |
| article html file updated | 28 September 2019 04:14 CEST | Update | N/A |
| article html file updated | 2 May 2019 17:30 CEST | Update | N/A |
| article html file updated | 2 January 2018 12:27 CET | Update | N/A |
| article html file updated | 1 November 2017 12:22 CET | Original file | N/A |
| article xml uploaded. | 1 November 2017 12:21 CET | Original file | https://www.mdpi.com/2311-5521/2/4/59/xml |
| article pdf uploaded. | 1 November 2017 12:21 CET | Version of Record | https://www.mdpi.com/2311-5521/2/4/59/pdf |
