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53 Développements modernes de la photogrammétrie aérienne. Bul. Soc.
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54 Basic investigations on behalf of the application of the theory of errors
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56 Precision of the relative orientation according to the method of Poivil-
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57 Bepaling van focaal- en nadirpunten in foto’s m.b.v. parallaxmeting in
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58 Adjustment of Aerotriangulation. Photogrammetria 1950, 51-4.
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59 Modelltriangulering. En ny method fôr Photogrammetrisk stommátning.
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60 Mechanical Radial Triangulation. Photogrammetria 1951-52. 1
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61 Contribution to theory of errors for double point intersection in space.
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63 Aerial photogrammetric activities at the Geographical Survey Office of
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40