TY - RPRT TI - A layered architecture for computer-based simulation supporting skills learning: an X-ray imaging paradigm. AU - L Costaridou AU - G Panayiotakis AU - C Efstratiou AU - C Papananikolaou AU - N Pallikarakis DO - 10.3109/14639239709010889 UR - https://pubmed.ncbi.nlm.nih.gov/9304562/ ID - 9304562 ER -