我一直在 LaTeX（使用 TeXmaker）中输入和复制文本到我的参考书目中。但是，我一直收到两个错误，我不知道如何修复。
第一个错误：
! Package inputenc Error: Unicode char \u8:̈ not set up for use with LaTeX.
See the inputenc package documentation for explanation.
Type H <return> for immediate help.
...
l.214 Lagunas-Bernabe, S., Cuaron-Ibargü
engoytia, J., Montano-Hirose, J....
Your command was ignored.
Type I <command> <return> to replace it with another command,
or <return> to continue without it.
我删除了所有奇怪的字母和分号，但它仍然出现。这就是它生气的原因：
@Article{Hofsaess2001, % here is the line where it finds the error
author = {Frederick R. Hofsaess},
title = {Time of antibody absorption in neonatal foals},
journal = {Journal of Equine Veterinary Science},
year = {2001},
volume = {21},
number = {4},
pages = {158-159}
}
我该怎么办？
第二个错误：
! Package natbib Error: Bibliography not compatible with author-year citations.
(natbib) Press <return> to continue in numerical citation style.
See the natbib package documentation for explanation.
Type H <return> for immediate help.
...
l.239 ...and\NAT@force@numbers{}\NAT@force@numbers
Check the bibliography entries for non-compliant syntax,
or select author-year BibTeX style, e.g. plainnat
这里说存在问题：
@Article{Jang2013,
author = {Y. D. Jang and K. W. Kang and L. G. Piao and T. S. Jeong and E. Auclair and S. Jonvel and R. DInca and Y. Y. Kim},
title = {Effects of live yeast supplementation to gestation and lactation diets on reproductive performance, immunological parameters and milk composition in sows},
journal = {Livestock Science},
year = {2013}, % here is the line where it finds the error
volume = {152},
pages = {167-173}
}
我试图删除它所说的有问题的部分，但错误仍然出现。
有人有解决方案吗？
我的书目：
\bibliographystyle{apalike}
\bibliography{tex/litterature2}