Burke, Patrick C.; Schultz, David M. (2004). "A 4-Yr Climatology of Cold-Season Bow Echoes over the Continental United States". Weather and Forecasting. 19 (6): 1061–1069. Bibcode:2004WtFor..19.1061B. DOI:10.1175/811.1.
Burke, Patrick C.; Schultz, David M. (2004). "A 4-Yr Climatology of Cold-Season Bow Echoes over the Continental United States". Weather and Forecasting. 19 (6): 1061–1069. Bibcode:2004WtFor..19.1061B. DOI:10.1175/811.1.