Architectuur in de natuur : de weg naar de optimale vorm / Stefan Hildebrandt [en] Anthony Tromba ; [vert. uit het Engels door N.M. Temme ; red.: T.J. Kortbeek]Variational formulations for coherent vortex structures / Barbera Wilhelmina van de FliertVariational problems with a strongly indefinite structure / Robertus Cornelius Adrianus Maria van der VorstVariational modeling of curves and surfaces / Jan Willem WesselinkPast and present variability of the solar-terrestrial system: measurement, data analysis and theoretical models = Variabilità passata e presente del sistema solare-terrestre: misurazione, analisi dei dati e modelli teorici / ed. by G. Cini Castagnoli and A. ProvenzaleConvolutions of heavy tailed random variables and applications to portfolio diversification and MA (1) time series / Jaap Geluk, Liang Peng, Casper G. de VriesDynamics and equilibria of fourth order differential equations / Gerrit Jan Bouwe van den BergOptimal retirement decision / Grzegorz Jan KulaSocial experiments and instrumental variables with duration outcomes / Jaap H. Abbring, Gerard J. van den BergAutomated response surface methodology for stochastic optimization models with unknown variance / Robin P. Nicolai, Rommert DekkerOptimal retirement decision / Grzegorz Jan KulaStories about maxima and minima / Etienne de KlerkCalculus of variations in mathematical physics / by H.A. LauwerierVariational methods, for boundary value problems, for systems of elliptic equations / by M.A. Lavrentʹev ; authorized transl. from the Russian ; ed. by J.R.M. RadokVariational approximation in classical lattice systems / door Antoine Gerard Schlijper