TY - JOUR AU - Hilscher, Roman Šimon AU - Zemánek, Petr TI - Friedrichs extension of operators defined by linear Hamiltonian systems on unbounded interval JO - Mathematica Bohemica PY - 2010 SP - 209 EP - 222 VL - 135 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/MB.2010.140698/ DO - 10.21136/MB.2010.140698 LA - en ID - 10_21136_MB_2010_140698 ER -