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The resonance fluorescence spectrum of au ensemble of two-level atoms driven by two classical, frequency degenerate and noncollinear laser beams is investigated. It has been found that the spatially-averaged resonance fluorescence spectra differ significantly from the spectra of two-level atoms calcula.ted for the single-beam excitation. Tle differences were noticed in the number of peaks, their positions and shapes and in their dependences on au angle between wave vectors of the incident beams. PACS numbers: 32.50.+a, 42.50.Hz, 42.25.Hz

Resonance Fluorescence Spectrum of Two-Level Atoms Driven by Two Noncollinear Classical Fields