TY  - JOUR 
AU  - Kowalewski, Adam 
TI  - Extremal Problems for Second Order Hyperbolic Systems with Time-Varying Delays 
JO  - Pomiary Automatyka Robotyka 
PY  - 2026 
KW  - boundary control 
KW  - electric long line 
KW  - optimal control 
KW  - second order hyperbolic system 
KW  - time-varying delays 
DO  - 10.14313/PAR_259/5 
VL  - 30  
IS  - 259 
SP  - 5 
EP  - 18 
UR  - https://par.pl/en/Yearbooks/2026/1-2026/Extremal-Problems-for-Second-Order-Hyperbolic-Systems-with-Time-Varying-Delays 
M3  - http://dx.doi.org/10.14313/PAR_259/5 
ER  -