On the existence of nearly Kirkman triple systems with subsystems.

Dameng Deng Rolf S. Rees Hao Shen On the existence of nearly Kirkman triple systems with subsystems. 17-33 2008 48 Des. Codes Cryptography 1 http://dx.doi.org/10.1007/s10623-007-9166-2 db/journals/dcc/dcc48.html#DengRS08