+** A hydra click interface
+I like hydra a lot. Here we define a hydra menu you might like for the link click action.
+
+#+BEGIN_SRC emacs-lisp :tangle org-ref.el
+(when (featurep 'hydra)
+ (require 'hydra)
+ (setq hydra-is-helpful t)
+
+ (defhydra org-ref-cite-hydra (:color blue)
+ "
+_p_: Open pdf _w_: WOS _g_: Google Scholar _K_: Copy citation to clipboard
+_u_: Open url _r_: WOS related _P_: Pubmed _k_: Copy key to clipboard
+_n_: Open notes _c_: WOS citing _C_: Crossref _f_: Copy bibtex entry to file
+_o_: Open entry _e_: Email entry and pdf
+"
+ ("o" org-ref-open-citation-at-point nil)
+ ("p" org-ref-open-pdf-at-point nil)
+ ("n" org-ref-open-notes-at-point nil)
+ ("u" org-ref-open-url-at-point nil)
+ ("w" org-ref-wos-at-point nil)
+ ("r" org-ref-wos-related-at-point nil)
+ ("c" org-ref-wos-citing-at-point nil)
+ ("g" org-ref-google-scholar-at-point nil)
+ ("P" org-ref-pubmed-at-point nil)
+ ("C" org-ref-crossref-at-point nil)
+ ("K" org-ref-copy-entry-as-summary nil)
+ ("k" (progn
+ (kill-new
+ (car (org-ref-get-bibtex-key-and-file)))) nil)
+ ("f" org-ref-copy-entry-at-point-to-file nil)
+
+ ("e" (save-excursion
+ (org-ref-open-citation-at-point)
+ (email-bibtex-entry)) nil)))
+#+END_SRC
+