TY - JOUR AU - J. Hsieh AU - J. Baird BT - Physical Review A DA - Jan-07-1972 DO - 10.1103/PhysRevA.6.141 PY - 1972 SP - 141 EP - 152 T2 - Physical Review A TI - Level-Crossing Spectroscopy in 7^2S Thallium. I. Studies of Coherence-Narrowing, Collision-Broadening, and Buffer-Gas Effects UR - http://link.aps.org/doi/10.1103/PhysRevA.6.141 VL - 6 SN - 0556-2791 ER -