Baltimore, MD: Paul H. Brookes. Kent, R. D., Miolo, G., & Bloedel, S. (1994) ... Miyamoto, R. T., Svirsky, M., Iler Kirk, K., Robbins, A. M., Todd, S., & Riley, ...
The direction of arrows can be head-child or child-head (has to be mentioned) ... Like STAG, STIG for phrase structures. Basic units are elementary trees ...