Roger Penrose: https://www.theguardian.com/science/2018/mar/14/stephen-hawking-obituary?CMP=twt_gu&__twitter_impression=true&__twitter_impression=true
Ignacio Cirac: http://www.abc.es/ciencia/abci-revoluciono-y-popularizo-fisica-201803142215_noticia.html
Univ. of Cambridge: https://www.cam.ac.uk/news/professor-stephen-hawking-1942-2018
Nature: https://www.nature.com/articles/d41586-018-02839-9
BBC: http://www.bbc.com/news/science-environment-15555565
Nature: https://www.nature.com/articles/d41586-018-02839-9
BBC: http://www.bbc.com/news/science-environment-15555565
Centre for theoretical Cosmology (Univ. of Cambridge): http://www.ctc.cam.ac.uk/news/180314_newsitem.php
J. L. Fernández Barbón: https://elpais.com/elpais/2018/03/14/ciencia/1521021288_534949.html
S.H.'s official website: http://www.hawking.org.uk/ Publicado en Últimas Noticias