Joachim Rosenthal Roxana Smarandache Maximum Distance Separable Convolutional Codes. 15-32 1999 10 Appl. Algebra Eng. Commun. Comput. 1 http://link.springer.de/link/service/journals/00200/bibs/9010001/90100015.htm db/journals/aaecc/aaecc10.html#RosenthalS99