AN EXTENSION OF RENYI’S CHARACTERISTIC THEOREM TO TWO-SIDED EXPONENTIAL DISTRIBUTIONS
TRAN KIM THANHTHE NORMALIZED DUALITY MAPPING AND TWO RELATED CHARACTERISTIC PROPERTIES OF A UNIFORMLY CONVEX BANACH SPACE
BUI TRONG KIENEFFICIENCY EQUIVALENT POLYHEDRA FOR THE FEASIBLE SET OF MULTIPLE OBJECTIVE LINEAR PROGRAMMING
NGUYEN THI BACH KIMGEOMETRIC SOLUTIONS OF NONLINEAR SECOND ORDER HYPERBOLIC EQUATIONS
MIKIO TSUJI, NGUYEN DUY THAI SON