We are currently submitting the paper for TCNG.
About SiGN-BN NNSR, please refer to the following paper:
Tamada, Y., Imoto, S., Araki, H., Nagasaki, M., Print, C., Charnock-Jones, D.S., and Miyano, S., (2011). Estimating genome-wide gene networks using nonparametric Bayesian network models on massively parallel computers, IEEE/ACM Transactions on Computational Biology and Bioinformatics 8(3), 683-697.
About SiGN-BN HC+Bootstrap:
Imoto, S., Goto, T., and Miyano, S. (2002). Estimation of genetic networks and functional structures between genes by using Bayesian network and nonparametric regression. Pacific Symposium on Biocomputing 7 (PSB 2002), 175-186.
Other SiGN related papers can be found at SiGN web site.