年21期

Applied Economics Letters《应用经济学快报》（一年21期）. Applied Economics Letters is a companion journal to Applied Economics. It publishes short accounts of new original research and encourages discussion of papers previously published in its companion journal. Letters are reviewed by the Editor,a member of the Editorial Board or another suitable authority. They are generally applied in nature,but may include discussion of method and theoretical formulation.

Hydrobiologia《水生生物学》（一年21期）. Hydrobiologia publishes original research, reviews and opinions investigating the biology of freshwater and marine environments, including the impact of human activities.Coverage includes molecular-, organism-,community -and ecosystem-level studies dealing with biological research in limnology and oceanography, including systematics and aquatic ecology. In addition to hypothesis-driven experimental research, it presents theoretical papers relevant to a broad hydrobiological audience.

Journal of Modern Optics《现代光学期刊》（一年21期）. The journal (under its former title Optica Acta) was founded in 1953 – some years before the advent of the laser – as an international journal of optics. Since then optical research has changed greatly; fresh areas of inquiry have been explored, different techniques have been employed and the range of application has greatly increased. The journal has continued to reflect these advances as part of its steadily widening scope.