Peric, Z. H., and S. M. Bogosavljevic. “A Method for Exact Error Probability Determination of Nonuniform Signaling For Gaussian Channels”. Elektronika ir Elektrotechnika 49, no. 7 (October 20, 2003). Accessed April 25, 2024. https://eejournal.ktu.lt/index.php/elt/article/view/11098.