Maria Helena Lopes Moreira da Veiga
AuthID: R-000-K6R
11
TITLE: A robust closed-form estimator for the GARCH(1,1) model Full Text
AUTHORS: Natalia Bahamonde; Helena Veiga;
PUBLISHED: 2016, SOURCE: JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION, VOLUME: 86, ISSUE: 8
AUTHORS: Natalia Bahamonde; Helena Veiga;
PUBLISHED: 2016, SOURCE: JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION, VOLUME: 86, ISSUE: 8
INDEXED IN: 
WOS 
CrossRef
WOS CrossRef12
TITLE: Correlations between oil and stock markets: A wavelet-based approach Full Text
AUTHORS: Belén Martín-Barragán; Sofia B Ramos; Helena Veiga;
PUBLISHED: 2015, SOURCE: Economic Modelling, VOLUME: 50
AUTHORS: Belén Martín-Barragán; Sofia B Ramos; Helena Veiga;
PUBLISHED: 2015, SOURCE: Economic Modelling, VOLUME: 50
INDEXED IN: CrossRef
CrossRef13
TITLE: Bayesian estimation of inefficiency heterogeneity in stochastic frontier models Full Text
AUTHORS: Jorge E Galan; Helena Veiga; Michael P Wiper;
PUBLISHED: 2014, SOURCE: JOURNAL OF PRODUCTIVITY ANALYSIS, VOLUME: 42, ISSUE: 1
AUTHORS: Jorge E Galan; Helena Veiga; Michael P Wiper;
PUBLISHED: 2014, SOURCE: JOURNAL OF PRODUCTIVITY ANALYSIS, VOLUME: 42, ISSUE: 1
INDEXED IN: WOS
WOS14
TITLE: Risk factors in the Oil industry: An upstream and downstream analysis
AUTHORS: Ramos, SB; Veiga, H; Wang, CW;
PUBLISHED: 2014, SOURCE: Lecture Notes in Energy, VOLUME: 54
AUTHORS: Ramos, SB; Veiga, H; Wang, CW;
PUBLISHED: 2014, SOURCE: Lecture Notes in Energy, VOLUME: 54
INDEXED IN: 
Scopus CrossRef
Scopus CrossRef15
TITLE: Oil price asymmetric effects: Answering the puzzle in international stock markets Full Text
AUTHORS: Sofia B Ramos ; Helena Veiga;
PUBLISHED: 2013, SOURCE: ENERGY ECONOMICS, VOLUME: 38
AUTHORS: Sofia B Ramos ; Helena Veiga;
PUBLISHED: 2013, SOURCE: ENERGY ECONOMICS, VOLUME: 38
16
TITLE: Asymmetry, realised volatility and stock return risk estimates Full Text
AUTHORS: Aurea Grane; Helena Veiga;
PUBLISHED: 2012, SOURCE: PORTUGUESE ECONOMIC JOURNAL, VOLUME: 11, ISSUE: 2
AUTHORS: Aurea Grane; Helena Veiga;
PUBLISHED: 2012, SOURCE: PORTUGUESE ECONOMIC JOURNAL, VOLUME: 11, ISSUE: 2
INDEXED IN: Scopus WOS
Scopus WOS17
TITLE: Risk factors in oil and gas industry returns: International evidence Full Text
AUTHORS: Sofia B Ramos ; Helena Veiga;
PUBLISHED: 2011, SOURCE: ENERGY ECONOMICS, VOLUME: 33, ISSUE: 3
AUTHORS: Sofia B Ramos ; Helena Veiga;
PUBLISHED: 2011, SOURCE: ENERGY ECONOMICS, VOLUME: 33, ISSUE: 3
18
TITLE: The puzzle of asymmetric effects of oil: New results from international stock markets
AUTHORS: Ramos, SB ; Veiga, H;
PUBLISHED: 2011, SOURCE: 2011 8th International Conference on the European Energy Market, EEM 11 in 2011 8th International Conference on the European Energy Market, EEM 11
AUTHORS: Ramos, SB ; Veiga, H;
PUBLISHED: 2011, SOURCE: 2011 8th International Conference on the European Energy Market, EEM 11 in 2011 8th International Conference on the European Energy Market, EEM 11
INDEXED IN: Scopus CrossRef
Scopus CrossRef19
TITLE: Information aggregation in experimental asset markets in the presence of a manipulator Full Text
AUTHORS: Helena Veiga; Marc Vorsatz;
PUBLISHED: 2010, SOURCE: EXPERIMENTAL ECONOMICS, VOLUME: 13, ISSUE: 4
AUTHORS: Helena Veiga; Marc Vorsatz;
PUBLISHED: 2010, SOURCE: EXPERIMENTAL ECONOMICS, VOLUME: 13, ISSUE: 4
