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The analytical expression for the propagation of a flattened laser beam array in a turbulent atmosphere is derived based on extended Huygens–Fresnel principle. The influence of beam order and turbulent atmosphere on beam quality is studied. It is revealed that the beam quality of a coherently combined laser beam array with higher order is better than its lower order counterpart when propagating in free-space, weak and medium turbulence (i.e. Cn2<10−13 m−2/3). The beam quality of higher order beam arrays degrades faster as the intensity of turbulence gets stronger. In the case of propagating in strong turbulence, the beam order has no influence on coherently combined beam quality. If households sort efficiently across locations, then at a given location families receive the same marginal benefit from the locational amenities. We test for Beats Dr Dre Sale Canada such sorting by imposing cross-equation restrictions on hedonic regressions that difference away location- versus house-specific effects. Estimates are obtained using a unique subset of the American Housing Survey in which adjacent housing units are grouped together and observed in both 1985 and 1989. Rejection of the cross-equation restrictions unambiguously implies an inefficient sorting of households. In contrast, the data Cheap Beats For Sale support the cross-equation restrictions which is a necessary but not sufficient condition for efficient sorting.