My problem is the following, I have 2 articles published by the same first author at 2 distinct years in Bibtex that I want to cite within the text in the "author-year" style. Even though I tried re-entering the citations over and over in Bibtex with different cite-key entries, one of the references is appearing in the text as a question mark (?), whereas all remaining references are showing up just fine.
MWE:
\documentclass[preprint,12pt,authoryear]{elsarticle}
\usepackage{natbib}
\biboptions{comma,round}
\biboptions{semicolon}
\begin{document}
[….text………. with following commands for in-text citations: \citep and \citet]
\end{document }
Bib entries:
@article{Ratnayake,
Author = {Ratnayake, W.M.N.,Hansen, StevenL. and Kennedy, MichaelP.},
Journal = {Journal of the American Oil Chemists' Society},
Number = {6},
Pages = {475-488},
Title = {{Evaluation of the CP-Sil 88 and SP-2560 GC Columns Used in the Recently Aapproved AOCS Official Method Ce 1h-05: Determination of cis-, trans-, saturated, monounsaturated, and polyunsaturated fatty acids in vegetable or non-ruminant Animal Oils and Fats by Capillary GLC Method}},
Volume = {83},
Year = {2006}}
This reference is appearing as question mark when cited within text
@inbook{Hernandez,
Author = {W.M. Nimal Ratnayake and Cristina Cruz-Hernandez},
Chapter = {Chapter 5},
Edition = {second edition},
Editor = {Destaillats, Fr{\'e}d{\'e}ric and S{\'e}b{\'e}dio, Jean-Louis and Dionisi, Fabiola and Chardigny, Jean-Michel},
Pages = {105 - 146},
Publisher = {Woodhead Publishing},
Series = {Oily Press Lipid Library Series},
Title = {Trans Fatty Acids in Human Nutrition (second edition)},
Year = {2012}}
Any feedback is highly appreciated!
elsarticle
orels article
?.bib
file, and also please use the code formatting on them. Thanks! Welcome to TeX.SX!