18589 Ayal Zwi Pinkus/Serge Winitzki/Jitse Niesen: Programming in Yacas.
Internet 2007, 31p.

18590 Ayal Zwi Pinkus/Serge Winitzki/Jitse Niesen: Introduction to Yacas.
Internet 2007, 17p.

18591 Ayal Zwi Pinkus/Serge Winitzki/Jitse Niesen: Yacas programmer's
function reference. Internet 2007, 41p.

18592 Ayal Zwi Pinkus/Serge Winitzki/Jitse Niesen: Yacas user's function
reference. Internet 2007, 147p.