TY - RPRT TI - On the application of systems engineering methodology to emergency communication system program planning. AU - G C Yorke AU - O A Gianniny AU - A P Sage PY - 1978 DO - 10.1016/0038-0121(78)90018-6 UR - https://pubmed.ncbi.nlm.nih.gov/10307128/ ID - 10307128 ER -