Theoretical studies on Nitriles

 Dear netters,
 our group is working on the topic of reactivity of the cyano group in
 acidic solution. We would be very grateful if some of you could suggest
 to us useful references about theoretical studies of additions to nitrile
 bonds or multiple bonds in general. Although we are interested in
 mechanistic studies related works are also wellcome.
 I'll summarize the responses.
 Thank you in advance,
  Carles Colominas
  Dept. of Org. Chem.                E-mail     ccolo %! at !%
  Institut Quimic de Sarria.         TEL:       (34-3)-203.89.00
  Universitat Ramon Llull.           FAX:       (34-3)-205.62.66
  Via Augusta 390.
  08017-Barcelona. CATALONIA.