Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found
 in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4
		Surya Pramana, I., 		Risanti Iswardani, P., & 		Sri Aryani, N.
2019 Oct  7.  Application of Data Mining in Optimization of Hotel's Food and Beverage Costs. International Journal of Engineering and Emerging Technology. [Online] 4:1