The 25 july 95,
I send you two references, who's speaking about the ends of yeast
Walmsley, R.W., Chan, C.S.M., Tye, B-K., Petes, T.D., " Unusual DNA
sequences associated with the ends of yeast chromosomes " Nature, vol
310, 12 july 1984.
Louis, E.J.and Haber, J.E.," The subtelomeric Y' Repeat Family in
Saccharomyces cerevisiae: An experimental System for Repeated Sequences
Evolution " Genetics 124: 533-545 (March, 1990).
I hop that you will find what you search.