@article{EXMA_2005__14_4_52465,
     author = {Harkins, Ryan and Weber, Eric and Westmeyer, Andrew},
     title = {Encryption schemes using finite frames and {Hadamard} arrays.},
     journal = {Experimental mathematics},
     pages = {423--433},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {2005},
     zbl = {1090.94019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2005__14_4_52465/}
}