| article html file updated | 8 February 2020 02:05 CET | Update | https://www.mdpi.com/2313-576X/3/2/13 |
| article html file updated | 23 September 2019 23:30 CEST | Update | - |
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| article xml uploaded. | 24 March 2017 10:42 CET | Update | https://www.mdpi.com/2313-576X/3/2/13/xml |
| article pdf uploaded. | 24 March 2017 10:42 CET | Updated version of record | https://www.mdpi.com/2313-576X/3/2/13/pdf |
| article pdf uploaded. | 23 March 2017 15:52 CET | Version of Record | https://www.mdpi.com/2313-576X/3/2/13/pdf-vor |