model metadata
cite templates
{{cite journal
| first1 = Bill | last1 = Frog
| title = Open energy system modeling
| date = 9 December 2016
| journal = Open Journal
| volume = 10
| number = 20
| pages = 30–40
| doi = 10.1000/12345678
| issn = 1234-5678
| url = http://website.org/frog-2016-oesm.pdf
| access-date = 2016-12-09
}}
Frog, Bill (9 December 2016). "Open energy system modeling". Open Journal. 10 (20): 30–40. doi:10.1000/12345678. ISSN 1234-5678. Retrieved 2016-12-09.
{{cite journal
| first1 = Bill | last1 = Frog
| title = Open energy system modeling
| date = 9 December 2016
| journal = Open Journal
}}
Frog, Bill (9 December 2016). "Open energy system modeling". Open Journal.
{{cite journal
| title = Open energy system modeling
}}
"Open energy system modeling".
{{cite journal}}
"title required".
