Sean Murphy. The Cryptanalysis of FEAL-4 with 20 Chosen Plaintexts. J. Cryptology, 2(3):145-154, 1990.
@article{Murphy90, title = {The Cryptanalysis of FEAL-4 with 20 Chosen Plaintexts}, author = {Sean Murphy}, year = {1990}, researchr = {https://researchr.org/publication/Murphy90}, cites = {0}, citedby = {0}, journal = {J. Cryptology}, volume = {2}, number = {3}, pages = {145-154}, }