Articles needing additional references from February 2015

Rodolphe_Wytsman

Rodolphe Paul Marie Wytsman (11 March 1860 – 2 November 1927) was a Belgian Impressionist painter. He trained at the Académie Royale des Beaux-Arts in Brussels, and was one of the founding members of Les XX, a group of avant-garde Belgian artists.

Gaetano_Crocco

Gaetano Arturo Crocco (26 October 1877 – 19 January 1968) was an Italian scientist and aeronautics pioneer, the founder of the Italian Rocket Society, and went on to become Italy's leading space scientist. He was born in Naples.
In 1927, Crocco began working with solid-propellant rockets and, in 1929, designed and built the first liquid-propellant rocket motors in Italy. He began work with monopropellants (fuel and oxidizer combined in one chemical liquid) in 1932, making him one of the first researchers in this field.
As head of the School of Aeronautics of the University of Rome, he performed research on flight mechanics, structural design, and high-altitude flight in addition to his work in rocket propulsion.
Because of his early efforts in aeronautics, Italian satellites were launched starting in the 1960s.
The San Marco programme was a cooperative effort of NASA and the Italian Space Commission, with NASA providing launch vehicles, use of its facilities, and training of Italian personnel.

Neil_Levang

Neil LeVang (January 3, 1932 – January 26, 2015) was an American musician who was best known from television's The Lawrence Welk Show, playing guitar, violin and banjo.

Carel_Willink

Albert Carel Willink (Dutch: [ˈɑlbərt ˈkaːrəl ˈʋɪlɪŋk]; 7 March 1900 – 19 October 1983) was a Dutch painter who called his style of Magic realism "imaginary realism".