Mitchell, D. G. M., Pusane, A. E., Görtz, N., & Costello, D. J. (2008). Free Distance Bounds for Protograph-Based Regular LDPC Convolutional Codes. In Proc. 5th International Symposium on Turbo Codes and Related Topics (pp. 408–413). http://hdl.handle.net/20.500.12708/70344