Petkovic, G.M., Peric, Z.H. and Stoimenov, L.V. (2016) “Switched Scalar Optimal u-law Quantization with Adaptation Performed to both the Variance and the Distribution of Speech Signal”, Elektronika ir Elektrotechnika, 22(1), pp. 64–67. doi:10.5755/j01.eee.22.1.14111.