Nightlight densities in the lowest, around the median and the highest ranked cities in the sample and the distribution of firms in each city. حسب Saul Estrin (8629173)

Cell Stiffness and constriction factor. حسب Roland M. Dries (6620132)

"…For the ectoderm cells the apical stiffness is increased to <i>k</i> = 1.4 and for the basal side it is decreased to <i>k</i> = 0.35. …"