TransmiTech

[1] Greg Durgin "Measurements and Models for Radio Path Loss and Penetration Loss In and Around Homes and Trees at 5.85 GHz" IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 46, NO. 11, NOVEMBER 1998

[2]Knife-edge effect. http://www.its.bldrdoc.gov/fs-1037/dir-020/_2955.htm