The HP VEE code I wrote (during my work on the exploitation of the ubiquitous electrical power-line network as a means for high-speed data communications, as the existing power-line infrastructure is growing in importance as a commercially viable and low-cost option, building on code by Alexandru Popovici, PhD) and the Matlab code I wrote for the publication:

Alexandre Matov "A Planning Tool for High Bit Rate Transmission over Power Line Communication Channel (2001)"

https://researchgate.net/publication/256436042_A_planning_tool_for_high_bit_rate_transmission_over_power_line_communication_channel