| Santanu, Agus. “Schedule (Penjadwalan).” Scheduller, published Jun. 23, 2012 (Retrieved from the Internet Feb. 10, 2021). Internet URL: <http://agsantanu.blogspot.com/2012/06/> (Year: 2012). |
| Gagnon, Francis. “Concentric Circles on a Map, version 2.0.” What We Think, published May 1, 2013 (Retrieved from the Internet Feb. 11, 2021). Internet URL: <https://chezvoila.com/blog/circles2/> (Year: 2013). |
| Volkov, Lubos. “Othercircles icon set.” Iconfinder, published Aug. 21,2013 (Retrieved from the Internet Feb. 10, 2021). Internet URL: <https://www.iconfinder.com/iconsets/othercircles> (Year: 2013). |
| Final Office Action issued for U.S. Appl. No. 16/131,332, dated Dec. 31, 2019. |
| Restriction Requirement issued for U.S. Appl. No. 15/252,765, dated Dec. 30, 2019. |
| USSN, Non-Final Office Action in U.S. Appl. No. 16/131,332, dated Sep. 5, 2019. |