Matthew D Viveiros, Jessica Kaffenberger
K-Means clustering of dermatology journals: comparing the distribution of "free-to-publish" and "pay-to-publish" models
Archives of dermatological research
history individual group always characterized sequence events people finish school enter labor force marry give birth get promoted change employers retire ultimately die formal organizations merge adopt innovations go bankrupt nations experience wars revolutions peaceful changes government surely business sociology explain predict occurrence events example individuals try marijuana others people marry early others marry late educational