feat(ref): add references

REFERENCES.md

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+# References
+
+Without these papers, we couldn't have investigated this phenomenon:
+
+| Title                                                                                                                                                |                                                                                   Links                                                                                   |
+|------------------------------------------------------------------------------------------------------------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
+| On the detectability of long period perturbations in close hierarchical triple stellar systems                                                       |             [ABS](https://www.aanda.org/articles/aa/abs/2003/06/aah4008/aah4008.html) <br/> [PDF](https://www.aanda.org/articles/aa/pdf/2003/06/aah4008.pdf)              |
+| KEPLER ECLIPSING BINARY STARS. IV. PRECISE ECLIPSE TIMES FOR CLOSE BINARIES AND IDENTIFICATION OF CANDIDATE THREE-BODY SYSTEMS                       |             [ABS](https://iopscience.iop.org/article/10.1088/0004-6256/147/2/45)<br/>[PDF](https://iopscience.iop.org/article/10.1088/0004-6256/147/2/45/pdf)             |
+| The Effects of Barycentric and Asymmetric Transverse Velocities on Eclipse and Transit Times                                                         |              [ABS](https://iopscience.iop.org/article/10.3847/1538-4357/aaa3ea) <br/> [PDF](https://iopscience.iop.org/article/10.3847/1538-4357/aaa3ea/pdf)              |
+| A SEARCH FOR HIERARCHICAL TRIPLES USING KEPLER ECLIPSE TIMING                                                                                        |           [ABS](https://iopscience.iop.org/article/10.1088/0004-6256/143/6/137) <br/> [PDF](https://iopscience.iop.org/article/10.1088/0004-6256/143/6/137/pdf)           |
+| KEPLER ECLIPSING BINARIES WITH STELLAR COMPANIONS                                                                                                    |           [ABS](https://iopscience.iop.org/article/10.1088/0004-6256/150/6/178) <br/> [PDF](https://iopscience.iop.org/article/10.1088/0004-6256/150/6/178/pdf)           |
+| Wōtan: Comprehensive Time-series Detrending in Python                                                                                                |              [ABS](https://iopscience.iop.org/article/10.3847/1538-3881/ab3984) <br/> [PDF](https://iopscience.iop.org/article/10.3847/1538-3881/ab3984/pdf)              |
+| KEPLER ECLIPSING BINARY STARS. VII. THE CATALOG OF ECLIPSING BINARIES FOUND IN THE ENTIRE KEPLER DATA SET                                            |            [ABS](https://iopscience.iop.org/article/10.3847/0004-6256/151/3/68) <br/> [PDF](https://iopscience.iop.org/article/10.3847/0004-6256/151/3/68/pdf)            |
+| A study of the light travel time effect in short-period MOA eclipsing binaries via eclipse timing                                                    |                                                     [ABS](https://academic.oup.com/mnras/article/480/4/4557/5078965)                                                      |
+| Triple Stars Observed by Kepler                                                                                                                      |                                         [ABS](https://arxiv.org/abs/1503.07295) <br/> [PDF](https://arxiv.org/pdf/1503.07295.pdf)                                         |
+| Detection of period variations of eclipsing binaries in the Catalina Sky Survey                                                                      | [ABS](https://academic.oup.com/mnras/article-abstract/503/2/2979/6164859) <br/> [PDF Download](https://authors.library.caltech.edu/records/t325f-vze13/files/stab646.pdf) |
+| A SURVEY OF STELLAR FAMILIES: MULTIPLICITY OF SOLAR-TYPE STARS                                                                                       |             [ABS](https://iopscience.iop.org/article/10.1088/0067-0049/190/1/1) <br/> [PDF](https://iopscience.iop.org/article/10.1088/0067-0049/190/1/1/pdf)             |
+| TRIPLE-STAR CANDIDATES AMONG THE KEPLER BINARIES                                                                                                     |            [ABS](https://iopscience.iop.org/article/10.1088/0004-637X/768/1/33) <br/> [PDF](https://iopscience.iop.org/article/10.1088/0004-637X/768/1/33/pdf)            |
+| TRANSIT TIMING OBSERVATIONS FROM KEPLER. VI. POTENTIALLY INTERESTING CANDIDATE SYSTEMS FROM FOURIER-BASED STATISTICAL TESTS                          |           [ABS](https://iopscience.iop.org/article/10.1088/0004-637X/756/2/186) <br/> [PDF](https://iopscience.iop.org/article/10.1088/0004-637X/756/2/186/pdf)           |
+| Modelling Kepler eclipsing binaries: homogeneous inference of orbital and stellar properties                                                         |                                                     [ABS](https://academic.oup.com/mnras/article/489/2/1644/5543223)                                                      |
+| Substellar companions in low-mass eclipsing binaries<br/><span style="font-size: 10pt"><i>NSVS 01286630, NSVS 02502726, and NSVS 07453183</i></span> |         [ABS](https://www.aanda.org/articles/aa/abs/2016/03/aa27941-15/aa27941-15.html) <br/> [PDF](https://www.aanda.org/articles/aa/pdf/2016/03/aa27941-15.pdf)         |
+
+We'd like to heavily credit these works for their contribution to our paper.