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During period 1987- 88 saw many research developments on gravity field reported by Calgary group. One of them is a paper "Advances in the numerical solution of the linear Molodensky problem" by MG Sideris and KP Schwarz published in Bulletin Geodesique 62:5-69 (now known as J of G). MGS & KPS (1988) Source -  BG 1988 . Teodolit klasik - Edinburgh - - - - -

IUGG  and IAG General Meeting was held in Vancouver in June 1987. IAG President at that time was Prof Angus Leppan. It was also the occasion of 125th anniversary of IAG. Among the papers; Sideris, MG "On the application of spectral techniques to the gravimetric problem". An invited paper. add unb papers here Koc kosong - - - - -

FIG Congress and Deformation Measurement Workshop are two important events to surveying community whom dealing with geodetic deformation analysis (GDA). In both events representatives of Commission 6 FIG were there to dissiminate knowledge and latest development on GDA. The 18th FIG Congress was held in Toronto in June 1986. A number of papers on GDA were presented and among the most importance were paper by Working Group 6.1 on deformation analysis (led by Adam Chrzanowski); "Report on the ad-hoc committee on the analysis of deformation surveys" by A Chrzanowski & Chen Yong-qi. The Toronto FIG Proceedings - Commission 5 & 6 - - - - -

Commission 6 FIG office bearer for period 1985-1987 were as follows; Chairman: Akos Detrekoi (TU Budapest, Hungary) Vice Chairman: Georgi Milev (Bulgaria - Bulgarische Akademie der Wissenschaften / Bulgarian Academy of Science) Secretary: Jim R Smith (UK) & Laszlo Csemnicsky (TU Budapest) There were four areas of interest pursued by Commission 6 during period 1985-1987; measuring methods and tolerance standard (Prof Hallermann, FRG) earth volume computation (Mr Kohen FRG - not active) deformation measurements (Prof Platek, Poland) underground utility (Mr Karl-Ludwig Fischer, FRG) Detrekoi (b.1939) BEng (1963) Doc Technical (1967) PhD (1971) DSc (1977) - source  here  and  wiki . Dr Akos Detrekoi (1939-2012) - - - - -