@article{  
   author = {J. Cheng, L. Scharenbroich, P. Baldi, E. Mjolsness},
   title = {Sigmoid: Towards a Generative, Scalable Software Infrastructure for Pathway Bioinformatics and Systems Biology.},
   journal = {IEEE Intelligent Systems},
   volume = {20},
   number = {3},
   pages = {68-75},
   note = {},
   abstract = {},
   keywords = {},
   year = {2005}
}