Payne Jr., B. F., R. Ackley, and M. F. Arend. “A PROPOSED RAPID METHOD FOR MEASURING AREA METHANE EMISSIONS: AN EXPLORATORY APPLICATION IN MANHATTAN, NEW YORK, USA”. European Scientific Journal, ESJ, Vol. 11, no. 10, Nov. 2015, https://eujournal.org/index.php/esj/article/view/6517.