Which variable to take as reference category?
125119
Reference level in GLM regression
28276
Reference type variable recycling - is a new reference variable created every loop in a loop if declared therein?
34988
How to do indirect variable evaluation
28513
How to call original implementation when overwriting a method with a category?
11951
Should I use properties or direct reference when accessing instance variables internally?
2112
Strict warning: Only variables should be passed by reference
45188
How do I pass a variable by reference?
50195
Determining Referer in PHP
117914
When to use self references or composition?
147226
Pass by reference, constant reference, rvalue-reference, or constant rvalue-reference?
65383
Is it Possible to Return a Reference to a Variable in C#?
64101
Impact of hyperref, when varioref and cleveref are used
109507
How to pass variables by reference and by value
111796
Sectioning bibliography by type of referred item
110762
How to cross-reference items in description lists?
27136
Reference: What is variable scope, which variables are accessible from where and what are "undefined variable" errors?
134520
Changing category subject in short intervals