This is BibTeX, Version 0.99d (TeX Live 2013)
Capacity: max_strings=35307, hash_size=35307, hash_prime=30011
The top-level auxiliary file: features_selection.aux
The style file: plain.bst
Database file #1: ref.bib
Warning--can't use both volume and number fields in hastie2009elements
You've used 5 entries,
            2118 wiz_defined-function locations,
            529 strings with 5105 characters,
and the built_in function-call counts, 2277 in all, are:
= -- 203
> -- 175
< -- 1
+ -- 71
- -- 64
* -- 206
:= -- 405
add.period$ -- 15
call.type$ -- 5
change.case$ -- 46
chr.to.int$ -- 0
cite$ -- 6
duplicate$ -- 56
empty$ -- 128
format.name$ -- 64
if$ -- 433
int.to.chr$ -- 0
int.to.str$ -- 5
missing$ -- 6
newline$ -- 28
num.names$ -- 10
pop$ -- 41
preamble$ -- 1
purify$ -- 42
quote$ -- 0
skip$ -- 36
stack$ -- 0
substring$ -- 123
swap$ -- 7
text.length$ -- 1
text.prefix$ -- 0
top$ -- 0
type$ -- 18
warning$ -- 1
while$ -- 17
width$ -- 6
write$ -- 57
(There was 1 warning)