If mathematics is informal, then perhaps we should accept that economics must be informal too

[11] GAMES ECONOMISTS PLAY - A NONCOOPERATIVE VIEW [J]. RAND JOURNAL OF ECONOMICS, 1989, 20 (01) : 113 - 124

[12] FRIEDMAN M, 1991, AM ECON REV, V81, P39

[13] Hahn F., 1984, Equilibrium and macroeconomics

[14] HENDRY DF, 1991, AM ECON REV, V81, P8

[15] HENDRY DF, 1993, DYNAMIC ECONOMETRICS

[16] KRUGMAN P, 1995, DEV GEOGRAPHY EC THE

[17] KRUGMAN P, 1996, FDN RES EC DO EC DO

[18] Lakatos I., 1967, PROBLEMS PHILOS MATH

[19] Lakatos I., 1967, PROOFS REFUTATIONS

[20] Leijonhufvud A., 1997, J ECON METHODOL, V4, P193, DOI DOI 10.1080/13501789700000014

[11] GAMES ECONOMISTS PLAY - A NONCOOPERATIVE VIEW [J]. RAND JOURNAL OF ECONOMICS, 1989, 20 (01) : 113 - 124

[12] FRIEDMAN M, 1991, AM ECON REV, V81, P39

[13] Hahn F., 1984, Equilibrium and macroeconomics

[14] HENDRY DF, 1991, AM ECON REV, V81, P8

[15] HENDRY DF, 1993, DYNAMIC ECONOMETRICS

[16] KRUGMAN P, 1995, DEV GEOGRAPHY EC THE

[17] KRUGMAN P, 1996, FDN RES EC DO EC DO

[18] Lakatos I., 1967, PROBLEMS PHILOS MATH

[19] Lakatos I., 1967, PROOFS REFUTATIONS

[20] Leijonhufvud A., 1997, J ECON METHODOL, V4, P193, DOI DOI 10.1080/13501789700000014