MR. RAHUL SHARMA, D. C. P. G. M. J. D. ONLINE FOOD BUSINESS: IS IT EATING UP OVERALL SALES OR GROWING IT (WITH SPECIAL REFERENCE TO ZOMATO AND SWIGGY). International Journal of Advanced Science and Technology, v. 29, n. 3s, p. 1597 - 1606, 11 Mar. 2020.