Collserola Tower - Norman Foster

Norman Foster won the competition for the design of a telecommunications tower on the Collserola range of mountains above Barcelona. The competition was announced some time in 1988.
Has anyone got handy some book listing the date of that announcement?
I'd also be interested in the date when the winner was announced.
Thanks in advance,

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.