This is BibTeX, Version 0.99d (TeX Live 2017/Arch Linux)
Capacity: max_strings=100000, hash_size=100000, hash_prime=85009
The top-level auxiliary file: hdpe.aux
The style file: plain.bst
Database file #1: hdpe.bib
Warning--empty journal in fig1
You've used 6 entries,
            2118 wiz_defined-function locations,
            527 strings with 4932 characters,
and the built_in function-call counts, 1418 in all, are:
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> -- 53
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:= -- 247
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preamble$ -- 1
purify$ -- 20
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skip$ -- 34
stack$ -- 0
substring$ -- 43
swap$ -- 5
text.length$ -- 0
text.prefix$ -- 0
top$ -- 0
type$ -- 24
warning$ -- 1
while$ -- 13
width$ -- 7
write$ -- 69
(There was 1 warning)