- 
								[1]
								H. Gegier and E. Marsden, Proc. R. Soc. Lond. A 82, 495 (1909) 
- 
								[2]
								E. Rutherford, Phil. Mag. Ser. 21, 669 (1911) 
- 
								[3]
								R. W. Mcallister and R. Hofstadter, Phys. Rev. 102, 851 (1956) 
- 
								[4]
								R. Hofstadter, Rev. Mod. Phys. 28, 214 (1956) 
- 
								[5]
								J. Arrington, W. Melnitchouk, and J. A. Tjon, Phys. Rev. C 76, 035205 (2007) 
- 
								[6]
								F. Gross et al., Eur. Phys. J. C 83, 1125 (2023) 
- 
								[7]
								J. C. Bernauer et al., Phys. Rev. Lett. 105, 1125 (2010) 
- 
								[8]
								W. Xiong et al., Nature 575, 147 (2019) 
- 
								[9]
								M. Mihoviloviče, P. Achenbach, T. Beranek, et al., Eur. Phys. J. A 57, 107 (2015) 
- 
								[10]
								H. Y. Gao and M. Vanderhaeghen, Rev. Mod. Phys. 94, 015002 (2012) 
- 
								[11]
								J. P. Karr, D. Marchand, and E. Voutier, Nat. Rev. Phys. 2, 601 (2020) 
- 
								[12]
								C. Peset, A. Pineda, and O. Tomalak, Prog. Part. Nucl. Phys. 121, 103901 (2021) 
- 
								[13]
								R. Pohl, A. Antognini, F. Nez, et al., Nature 466, 213 (2010) 
- 
								[14]
								A. Antognini et al., Science 101, 417 (2013) 
- 
								[15]
								H. W. Griesshammer, J. A. McGovern, D. R. Phillips, et al., Prog. Part. Nucl. Phys. 67, 841 (2012) 
- 
								[16]
								F. E. Low, Phys. Rev. 96, 1428 (1954) 
- 
								[17]
								M. Gell-Mann and M. L. Goldberger, Phys. Rev. 96, 1433 (1954) 
- 
								[18]
								S. Cotogno, C. Lorc´e, P. Lowdon and M. Morales, Phys. Rev. D 101, 056016 (2020) 
- 
								[19]
								M. D. Scadron, Phys. Rev. 165, 1640 (1968) 
- 
								[20]
								D. N. Williams and Y. P. Yao, Phys. Rev. D 1, 1380 (1970) 
- 
								[21]
								C. Lorce , arXiv: 0901.4199v1 [hep-ph] 
- 
								[22]
								S. Nozawa and D. B. Leinweber, Phys. Rev. D 42, 3567 (1990) 
- 
								[23]
								F. J. Ernst, R. G. Sachs, and K. C. Wali, Phys. Rev. 119, 3567 (1960) 
- 
								[24]
								R. G. Sachs, Phys. Rev. 126, 2256 (1962) 
- 
								[25]
								E. Eichten and B. R. Hill, Phys. Lett. B 234, 511 (1990) 
- 
								[26]
								H. Georgi, Phys. Lett. B 240, 447 (1990) 
- 
								[27]
								A. V. Manohar, Phys. Rev. D 56, 230 (1997) 
- 
								[28]
								W. E. Caswell and G. P. Lepage, Phys. Lett. B 167, 437 (1986)