KHALETSKAYA, K.; YALAVAYA, N.; YALAVAYA, Y. AMMONIA AND ITS COMPOUNDS IN CONCRETE: REVIEW OF ANALYTICAL METHODS AND THE RESULTS OF POTENTIOMETRIC AND PHOTOMETRIC DETERMINATION. Вестник Полоцкого государственного университета. Серия F. Строительство. Прикладные науки 2015, 88-96.