Collisional broadening and shift of Doppler-free two-photon thallium lines perturbed by rare-gas atomsA. Bielski, R. Ciuryło, J. Domysławska and R. S. TrawińskiEur. Phys. J. D, 5 3 (1999) 357-362DOI: https://doi.org/epjd/v5/p357(d8209)