Cite
Lookback time and Chandra constrains on cosmological parameters
MLA
Tonoiu, D., et al. Lookback Time and Chandra Constrains on Cosmological Parameters. 2011. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsarx&AN=edsarx.1107.4867&authtype=sso&custid=ns315887.
APA
Tonoiu, D., Caramete, A., & Popa, L. A. (2011). Lookback time and Chandra constrains on cosmological parameters.
Chicago
Tonoiu, D., A. Caramete, and L. A. Popa. 2011. “Lookback Time and Chandra Constrains on Cosmological Parameters.” http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsarx&AN=edsarx.1107.4867&authtype=sso&custid=ns315887.