Hovannisian, [by] Richard G.The republic of Armenia (англ.). — 2. print.. — Berkeley: University of California Press, 1971. — P. 145. — ISBN 9780520018051.. — «In February teams of civil and mining engineers and technicians from other parts of the Caucasus and from southern Russia were employed to study the soil, survey the mineral deposits, assess the industrial potential, and formulate plans for the reconstruction of Armenia. This important project was financed through a grant of 2 million rubles from the Mailov brothers, oil magnates who had amassed a fortune in Baku before the World War.».
