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3. Angus-Leppan PV(1980) Refraction in levelling: extension to stable and neutral atmospheric conditions. Proc Symp on Redefinition of North American Vertical Geodetic Networks Ottawa May 1980 Canadian Inst of Surveying, 677-690.
4. Angus-Leppan PV, Brunner FK (1980) Atmospheric Temperature Models for Short Range EDM Canadian Surveyor v 34, 6: 153–165.
5. Angus-Leppan PV, Webb EK (1971) Turbulent heat transfer and atmospheric refraction, IAG Gen Assembly, Section 1, XV IUGG Gen Assmebly, Moscow.