diff --git a/bib.sh b/bib.sh
index cab8e2d..7b8b948 100755
--- a/bib.sh
+++ b/bib.sh
@@ -14,10 +14,10 @@ else
     echo update only local bib files
 fi
 
-python split_bib.py transformer
-python split_bib.py math-2024 
-python split_bib.py zeon-algebra
+./split_bib.py transformer
+./split_bib.py math-2024
+./split_bib.py zeon-algebra
 # lean-ga should be more updated if duplicated
-python split_bib.py lean-ga
+./split_bib.py lean-ga
 # forest overrides external bibs
-python split_bib.py forest
+./split_bib.py forest
diff --git a/justfile b/justfile
index da86d72..270b744 100644
--- a/justfile
+++ b/justfile
@@ -25,6 +25,10 @@ chk:
 thm:
     ./thm.sh
 
+prep-bib:
+    @echo "pyenv shell 3.11"
+    @echo "pip3 install bibtexparser"
+
 bib:
     ./bib.sh
 
diff --git a/split_bib.py b/split_bib.py
old mode 100644
new mode 100755
index 6f1eba3..7ecd1ce
--- a/split_bib.py
+++ b/split_bib.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 import json
 import os
 import pathlib
@@ -153,7 +154,7 @@ def parse_frontmatter(line):
 
     # detect duplication
     if len(bib_filenames_i) > 1:
-        #  {tree_file_i.relative_to(project_root)}: 
+        #  {tree_file_i.relative_to(project_root)}:
         print(f'🟡 {bib_filenames_i}')
 
     formatted = TREE_TEMPLATE.format(
diff --git a/tex/forest.bib b/tex/forest.bib
index 6665dad..84270c2 100644
--- a/tex/forest.bib
+++ b/tex/forest.bib
@@ -1050,3 +1050,20 @@ @misc{salkinder2021nxnxn
       url={https://arxiv.org/abs/2112.08602},
 }
 
+@article{wang2024simple,
+  title={A Simple Approach to Differentiable Rendering of SDFs},
+  author={Wang, Zichen and Deng, Xi and Zhang, Ziyi and Jakob, Wenzel and Marschner, Steve},
+  journal={arXiv preprint arXiv:2405.08733},
+  year={2024}
+}
+
+@article{tricard2024interval,
+  title={Interval Shading: using Mesh Shaders to generate shading intervals for volume rendering},
+  author={Tricard, Thibault},
+  journal={Proceedings of the ACM on Computer Graphics and Interactive Techniques},
+  volume={7},
+  number={3},
+  pages={1--11},
+  year={2024},
+  publisher={ACM New York, NY, USA}
+}
diff --git a/trees/refs/tricard2024interval.tree b/trees/refs/tricard2024interval.tree
new file mode 100644
index 0000000..a4d1fbd
--- /dev/null
+++ b/trees/refs/tricard2024interval.tree
@@ -0,0 +1,18 @@
+% ["forest"]
+\title{Interval shading: Using mesh shaders to generate shading intervals for volume rendering}
+\date{2024}
+\author{Thibault Tricard}
+\taxon{reference}
+
+\meta{bibtex}{\startverb
+@article{tricard2024interval,
+ title = {Interval Shading: using Mesh Shaders to generate shading intervals for volume rendering},
+ author = {Tricard, Thibault},
+ year = {2024},
+ journal = {Proceedings of the ACM on Computer Graphics and Interactive Techniques},
+ volume = {7},
+ number = {3},
+ pages = {1--11},
+ publisher = {ACM New York, NY, USA}
+}
+\stopverb}
diff --git a/trees/refs/wang2024simple.tree b/trees/refs/wang2024simple.tree
new file mode 100644
index 0000000..4a2159d
--- /dev/null
+++ b/trees/refs/wang2024simple.tree
@@ -0,0 +1,14 @@
+% ["forest"]
+\title{A simple approach to differentiable rendering of SDFs}
+\date{2024}
+\author{Zichen Wang}\author{Xi Deng}\author{Ziyi Zhang}\author{Wenzel Jakob}\author{Steve Marschner}
+\taxon{reference}
+
+\meta{bibtex}{\startverb
+@article{wang2024simple,
+ title = {A Simple Approach to Differentiable Rendering of SDFs},
+ author = {Wang, Zichen and Deng, Xi and Zhang, Ziyi and Jakob, Wenzel and Marschner, Steve},
+ year = {2024},
+ journal = {arXiv preprint arXiv:2405.08733}
+}
+\stopverb}
diff --git a/trees/uts-0018.tree b/trees/uts-0018.tree
index 890580d..952f535 100644
--- a/trees/uts-0018.tree
+++ b/trees/uts-0018.tree
@@ -11,6 +11,16 @@
 \subtree[2024]{
 \title{Year 2024}
 
+\subtree[2024-10]{
+\title{October, 2024}
+
+\mdblock{10-01~10-02}{
+- found \citek{wang2024simple} and \citek{tricard2024interval}
+- work on Rust stuff
+}
+
+}
+
 \subtree[2024-09]{
 \title{September, 2024}