Factors influencing composition over subarctic North America during summer

The core information for this publication's citation.: 
Wofsy, S. C., S.-M. Fan, D. R. Blake, J. Bradshaw, S. Sandholm, H. Singh, G. Sachse, and R. Harriss (1994), Factors influencing composition over subarctic North America during summer, J. Geophys. Res., 99, 1887-1897.