TY - RPRT TI - General schema theory for genetic programming with subtree-swapping crossover: part I. AU - Riccardo Poli AU - Nicholas Freitag McPhee PY - 2003 DO - 10.1162/106365603321829005 UR - https://pubmed.ncbi.nlm.nih.gov/12804097/ ID - 12804097 ER -