TY JOUR TI Checking of combinational circuits, based on sum codes with one weighted data bit KW technical diagnostics KW concurrent error detection system KW sum code KW Berger code KW bit weight KW sum weight-based code KW undetectable error in data vector KW error detecting properties JO Transport automation research AU Sapozhnikov, V.. AU Sapozhnikov, V.. AU Efanov, D.. PY 2016 IS 2 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"