TY - JOUR T1 - Some effects on quantum systems due to the gravitational field of a topological defect JO - Brazilian Journal of Physics A1 - Marques, Geusa de A. A1 - Bezerra, V. B. SN - 0103-9733 UL - 10.1590/S0103-97332005000700021 VL - 35 Y1 - 2005 PB - Brasil ER -