POSSIBILITY FOR SYNERGIC GROWTH-STIMULATING EFFECTS OF HUMIC SUBSTANCES AND WATER WITH LOW ISOTOPE 2H CONTENT ON THE GERMINATION OF WHEAT SEEDS UNDER FAVOURABLE AND STRESS CONDITIONS Article Bakanova N.G., Timakov A.A., Smirnov A.I., Kalabin G.A. Functions of Natural Organic Matter in Changing Environment. Springer Netherlands. Vol. 9789400756342. 2013. P. 1111-1115