Could anybody help me?
Assuming you're using natbib, it allows you to use a \Citet command
(note the uppercase 'C') which capitalizes the first letter of the
citation. This should do what you want, I think.
Alan
"Bechtolsheim, Stephan von"
In other cases in which you want the capital, use braces:
"Kent D. {Van Liere} and Riley E. Dunlap
Here is another example:
"M. L. Parry and O.F. Canziani and J. P. Palutikof and P. J. {van der
Linden} and C. E. Hanson"
Here is another example with "Jr.," which also causes problems:
{Deats, Jr., Paul}
or
"Riggs, Jr., Webster"
"Strunk, Jr., William and White, E. B."