Ollikainen, M. (1987). Astro-geodetic deflections of the vertical at first-order triangulation stations.
Chicago Style (17th ed.) CitationOllikainen, Matti. Astro-geodetic Deflections of the Vertical at First-order Triangulation Stations. Helsinki, 1987.
MLA (9th ed.) CitationOllikainen, Matti. Astro-geodetic Deflections of the Vertical at First-order Triangulation Stations. 1987.
Warning: These citations may not always be 100% accurate.