ON SPHERICAL SPLINE INTERPOLATION AND APPROXIMATIONFREEDEN W.1981; MATH. METHODS APPL. SCI.; DEU; DA. 1981; VOL. 3; NO 4; PP. 551-575; BIBL. 34 REF.Article

ON INTEGRAL FORMULAS OF THE (UNIT) SPHERE AND THEIR APPLICATION TO NUMERICAL COMPUTATION OF INTEGRALSFREEDEN W.1980; COMPUTING; ISSN 0010-485X; AUT; DA. 1980; VOL. 25; NO 2; PP. 131-146; ABS. GER; BIBL. 11 REF.Article

ON THE APPROXIMATION OF EXTERNAL GRAVITATIONAL POTENTIAL WITH CLOSED SYSTEMS OF (TRIAL) FUNCTIONSFREEDEN W.1980; BULL. GEOD.; FRA; DA. 1980; VOL. 54; NO 1; PP. 1-20; BIBL. 3 P.Article

MULTIDIMENSIONAL EULER SUMMATION FORMULAS AND NUMERICAL CUBATUREFREEDEN W.1982; SER. INT. ANAL. NUMER.; ISSN 0373-3149; CHE; DA. 1982; VOL. 57; PP. 77-88; BIBL. 8 REF.Conference Paper

EIN BEITRAG ZUR NAEHERUNGSWEISEN BERECHNUNG VON INTREGRALEN UEBER DIE VOLLKUGEL = CONTRIBUTION AUX CALCULS APPROCHES A PAS D'INTEGRALES SUR TOUTE LA SPHEREFREEDEN W.1978; Z. ANGEW. MATH. MECH.; DDR; DA. 1978; VOL. 58; NO 7; PP. 413-414; BIBL. 2 REF.Article

INTERPOLATION AND BEST APPROXIMATION BY HARMONIC SPLINE FUNCTIONS-THEORETICAL AND COMPUTATIONAL ASPECTSFREEDEN W.1982; BOLL. GEOD. SCI. AFFINI; ISSN 0006-6710; ITA; DA. 1982; VOL. 41; NO 1; PP. 105-120Article

EINE KLASSE VON KUBATURFORMELN DER EINHEITSSPHAERE = UNE CLASSE D'HARMONIQUES SPHERIQUES SUR LA SPHERE UNITEFREEDEN W.1981; ZFV, Z. VERMESSUNGSWES.; ISSN 0340-4560; DEU; DA. 1981; VOL. 106; NO 4; PP. 200-210; BIBL. 9 REF.Article

UEBER PARAMETERABHAENGIGE INTEGRALFORMELN DER STURM-LIOUVILLESCHEN THEORIE UND IHRE ANWEDUNG ZUR NUMERISCHEN BERECHNUNG VON INTEGRALEN = FORMULES INTEGRALES DEPENDANTS D'UN PARAMETRE DANS LA THEORIE DE STRUM LIOUVILLE ET LEURS APPLICATIONS AU CALCUL NUMERIQUE DES INTEGRALESFREEDEN W.1980; MITT. MATH., SEMIN. GIESSEN; ISSN 0373-8221; DEU; DA. 1980; VOL. 145; PP. 75-110; ABS. ENG; BIBL. 13 REF.Article

STOKES BOUNDARY-VALUE PROBLEM OF PHYSICAL GEODESY AND ITS NUMERICAL COMPUTATIONFREEDEN W.1978; MITT. INST. THEOR. GEOD. UNIV. BONN; DEU; DA. 1978; NO 56; 29 P.; ABS. GER; BIBL. 13 REF.Serial Issue

ON THE PERMANENCE PROPERTY IN SPHERICAL SPLINE INTERPOLATIONFREEDEN W.1982; REPORTS OF THE DEPARTMENT OF GEODETIC SCIENCE AND SURVEYING; ISSN 0733-1983; USA; DA. 1982; NO 341; 88 P.; BIBL. 2 P.Serial Issue

SPLINE METHODS IN GEODETIC APPROXIMATION PROBLEMSFREEDEN W.1982; MATH. METHODS APPL. SCI.; ISSN 507121; DEU; DA. 1982; VOL. 4; NO 3; PP. 382-396; BIBL. 16 REF.Article

AN APPLICATION OF A SUMMATION FORMULA TO NUMERICAL COMPUTATION OF INTEGRALS OVER THE SPHEREFREEDEN W.1978; BULL. GEOD.; FRA; DA. 1978; VOL. 52; NO 3; PP. 165-175; BIBL. 5 REF.Article

REMAINDER TERMS IN NUMERICAL INTEGRATION FORMULAS OF THE SPHEREFREEDEN W; REUTER R.1982; SER. INT. ANAL. NUMER.; ISSN 0373-3149; CHE; DA. 1982; VOL. 61; PP. 151-170; BIBL. 9 REF.Conference Paper

Spherical spline interpolation-basic theory and computational aspectsFREEDEN, W.Journal of computational and applied mathematics. 1984, Vol 11, Num 3, pp 367-375, issn 0377-0427Article

Basis systems and their role in the approximation of the Earth's gravitional field = Les systèmes de base et leur rôle dans l'approximation du champ gravimétrique terrestreFREEDEN, W.Gerlands Beiträge zur Geophysik. 1985, Vol 94, Num 1, pp 19-34, issn 0016-8696Article

BEST APPROXIMATE INTEGRATION FORMULAS FOR BOUNDARY SURFACES OF STAR-SHAPED BODIESFREEDEN W; KERSTEN H.1980; BOLL. GEOD. SCI. AFFINI; ITA; DA. 1980; VOL. 39; NO 1; PP. 37-48; BIBL. 3 REF.Article

A COMBINED (SPLINE-) INTERPOLATION AND SMOOTHING METHOD FOR THE DETERMINATION OF THE EXTERNAL GRAVITATIONAL POTENTIAL FROM HETEROGENEOUS DATAFREEDEN W; WITTE B.1982; BULL. GEOD.; ISSN 0007-4632; FRA; DA. 1982; VOL. 56; NO 1; PP. 53-62; BIBL. 23 REF.Article

A CONSTRUCTIVE APPROXIMATION THEOREM FOR THE OBLIQUE DERIVATIVE PROBLEM IN POTENTIAL THEORYFREEDEN W; KERSTEN H.1981; MATH. METHODS APPL. SCI.; DEU; DA. 1981; VOL. 3; NO 1; PP. 104-114; BIBL. 11 REF.Article

Basis systems and their role in the approximation of the Earth's gravitational fieldFREEDEN, W.Gerlands Beiträge zur Geophysik. 1985, Vol 94, Num 1, pp 19-34, issn 0016-8696Article

Computation of spherical harmonics and approximation by spherical harmonic expansionsFREEDEN, W.Reports of the Department of Geodetic Science and Surveying. 1985, Num 362, issn 0733-1983, IV-133 pSerial Issue

Interpolation by multidimensional periodic splinesFREEDEN, W.Journal of approximation theory. 1988, Vol 55, Num 1, pp 104-117, issn 0021-9045Article

Constructive approximation and numerical methods in geodetic research today : an attempt at a categorization based on an uncertainty principleFREEDEN, W; MICHEL, V.Journal of geodesy (Print). 1999, Vol 73, Num 9, pp 452-465, issn 0949-7714Article

An integrated wavelet concept of physical geodesyFREEDEN, W; SCHNEIDER, F.Journal of geodesy (Print). 1998, Vol 72, Num 5, pp 259-281, issn 0949-7714Article

Wavelet approximations on closed surfaces and their application to boundary-value problems of potential theoryFREEDEN, W; SCHNEIDER, F.Mathematical methods in the applied sciences. 1998, Vol 21, Num 2, pp 129-163, issn 0170-4214Article

Vector spherical spline interpolationFREEDEN, W; GERVENS, T.International series of numerical mathematics. 1989, Vol 90, pp 157-171, issn 0373-3149Conference Paper