TY - RPRT TI - Comment on "Reflected phase-conjugate wave in a plasma" AU - RW Hellwarth AU - D Lininger AU - MV Goldman PY - 1989 DO - 10.1103/physrevlett.62.3011 UR - https://pubmed.ncbi.nlm.nih.gov/10040153/ ID - 10040153 ER -